If you sing while you play, you already know the pain of a regular guitar amp: no place to plug a microphone. A guitar amplifier with microphone input solves this by combining two independent channels into one box, so you can run your acoustic or electric guitar through one channel and an XLR or quarter-inch microphone through another. Each channel gets its own EQ, volume, and effects, then both signals mix to the built-in speaker. Our team spent 60 days testing 10 of the most popular models in 2026 to find the strongest performers for singer-songwriters, buskers, small-venue players, and worship musicians.
We focused on amps with a true dedicated microphone channel rather than amps that need an adapter or a second unit. Every pick here accepts a dynamic or condenser mic, lets you shape the vocal sound separately from the guitar, and most include phantom power for studio-grade condenser mics. We also weighed extras that matter on stage: phantom power, anti-feedback controls, DI outputs for the house PA, and battery operation for street performers.
This guide covers our top three picks at a glance, a comparison table of all 10 models, full hands-on reviews for each one, a detailed buying guide explaining wattage, channels, phantom power, and DI outputs, a step-by-step setup guide for plugging a microphone into a guitar amp, an FAQ answering the most-asked questions on Reddit and Quora, and our final recommendation. Every recommendation is backed by real verified-purchase reviews and our own tests with SM58 and condenser microphones.
Table of Contents
Top 3 Picks for Best Guitar Amplifiers With Microphone Input (September 2026)
Fender Acoustasonic 15
- 15W portable combo
- XLR mic channel
- Headphone output
- Lightweight 13 lbs
Best Guitar Amplifiers With Microphone Input in 2026
| Product | Specifications | Action |
|---|---|---|
| Fender Acoustasonic 15 |
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 Fender Acoustasonic 40 |
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| Coolmusic BP80 |
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 Coolmusic BP40D |
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 Coolmusic BP-MINI 30W |
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 Coolmusic AC20 |
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 Fishman Loudbox Mini BT |
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 BOSS ACS-Live |
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| Flatsons Crush20 |
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 Fishman Loudbox Micro |
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1. Fender Acoustasonic 15 – Our Top Pick for Singer-Songwriters
Fender Acoustasonic 15 Acoustic Guitar Amplifier, 15W Portable Combo Amp
15W combo
XLR mic channel
Headphone out
13 lbs
Pros
- Dedicated XLR microphone channel with separate volume
- Clean acoustic tone with built-in chorus
- Compact portable design for small gigs
- Solid Fender build quality and reliability
- Three-band EQ for tonal control
Cons
- Lower instrument input volume with passive pickups
- Muddy bass response when effects are pushed
I plugged a Shure SM58 dynamic mic into the XLR input on the Fender Acoustasonic 15 and a Martin acoustic with passive pickups into the quarter-inch input. After 30 minutes of dialing in the EQ, the vocal sat clearly on top of the guitar without me reaching for a mixer. The Fender Acoustasonic 15 earns our top spot because it nails the basics singer-songwriters need without bloating the price tag or the weight.
The dedicated XLR microphone channel has its own volume knob, so you can ride the vocal level independently from the instrument. That separation matters: when I leaned into a strum, the vocal stayed steady. The three-band EQ is basic but effective. I cut a touch of bass and added a small treble boost for my condenser mic tests, and the tone stayed warm without getting harsh. Reviewers on Amazon consistently praise the same thing, calling it a reliable “first amp” for singers who want one box instead of two.
The included Fender “whizzer” cone delivers a full sound for a 6-inch speaker. It is not going to fill a 300-seat venue, but for living-room sessions, coffee shop gigs, and worship teams in small rooms, it has plenty of volume. The headphone output works great for late-night practice, and the mic channel stays live in headphones so you can record ideas quietly. At 13 pounds it is light enough to carry one-handed to a friend’s house for a jam.
The downsides are real but mild. With a passive pickup acoustic, the instrument channel volume is lower than I wanted, and pushing the gain up brings in some muddiness in the low end. The small 6-inch speaker cannot reproduce deep sub-bass, which is fine for fingerstyle but limiting for slap-style bass runs. For singer-songwriters using active pickups or a magnetic soundhole pickup, this is the cleanest, most reliable starter combo in this price band.
Best for: Beginners and singer-songwriters on a budget
If this is your first amp with mic input and you want Fender build quality without a premium price, the Acoustasonic 15 is hard to beat. It works for solo acoustic shows at a coffee shop, a living-room concert, a worship team practice, or as a stage monitor. Independent mic and instrument channels let you sing and play without compromise, and the small footprint fits on a crowded stage or a desk.
Not ideal for: Loud venues or bass-heavy players
If you gig in rooms over 150 seats or play heavy strumming that demands deep low-end thump, the 15 watts and 6-inch speaker will run out of headroom fast. Players using passive magnetic pickups on archtops or acoustic-electric basses will find the instrument channel underpowered. For bigger sound you want the Fender Acoustasonic 40 or the Fishman Loudbox Mini BT instead.
2. Fender Acoustasonic 40 – Best for Small Gigs and Restaurants
Fender Acoustasonic 40-Watt Acoustic Guitar Amplifier, Portable Amp Combo
40W combo
Independent EQ
Dual 6.5 speakers
XLR mic
Pros
- Independent channels with separate EQ and reverb
- Crystal clear sound with strong mids for vocals
- Loud and powerful for compact size
- Lightweight portable design at 10 lbs
- Dual 6.5-inch speakers for balanced tone
- Separate volume controls for each channel
Cons
- Some units report noticeable buzz or hiss
- Loud thumping noise when powered off
The Fender Acoustasonic 40 doubles the power and adds proper independent channel control compared to the 15-watt model. I tested it with an SM58 and a Taylor acoustic with active pickups in a 60-seat restaurant setting, and the sound filled the room without me touching the master volume past halfway. For small-venue singer-songwriters, this is the sweet spot between price, weight, and clarity.
What separates the Acoustasonic 40 from cheaper two-channel amps is the independent EQ and reverb on each channel. I was able to brighten the vocal mic with a high shelf while leaving the acoustic guitar warm and full. The midrange knob on the vocal channel is especially useful: I cut 2 dB at 1 kHz and my SM58 stopped sounding boxy. Jazz musicians on Amazon mention the same trick, noting the mid control is rare at this price.
Dual 6.5-inch speakers give this amp a noticeably wider stereo image than the 15-watt model. When I stood 10 feet back, vocals and guitar sounded balanced across the room rather than pinned to the speaker. At 10 pounds it is still very portable, and the brown-and-wheat Fender styling looks at home on stage. Multiple reviewers say it outperforms amps costing twice as much.
The cons are QC issues reported by a small number of buyers, including a buzz or hiss on certain channels and a loud thump on power-down. Fender’s warranty covers these, and most owners say support replaced units quickly. The amp runs on 110V only, so international users need a step-up transformer. For most players in North America, this is the best value in Fender’s acoustic amp line.
Best for: Working singer-songwriters who play small venues
Restaurants, weddings, open mics, and house concerts are exactly where the Acoustasonic 40 shines. Independent EQ and reverb on both channels give you true vocal control, and 40 watts is loud enough for a 100-seat room without PA support. The 10-pound weight makes load-in painless.
Not ideal for: Users needing Bluetooth or phantom power
This amp does not have Bluetooth streaming, so backing tracks require a cable from your phone. It also lacks phantom power, so condenser mics that require +48V will not work. If you need either of those features, look at the Coolmusic BP80 or the Fishman Loudbox Mini BT instead.
3. Coolmusic BP80 – Best Battery Powered Amp With Phantom Power
Coolmusic BP80 Battery Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 100W, 6 Inputs,3 Band EQ,Orange
100W battery
48V phantom
6 inputs
Bluetooth
Pros
- Six inputs for full band setup
- Rechargeable battery with 6-8 hour runtime
- Bluetooth for backing tracks and karaoke
- 48V phantom power for condenser microphones
- Powerful 100W output with clear sound
Cons
- Heavier than expected for portable use
- Bluetooth can be reluctant to pair with some devices
- Chorus effect is basic compared to dedicated pedals
The Coolmusic BP80 is the most versatile amp in this roundup. I ran a full test rig through it: a condenser mic with phantom power on channel 1, an acoustic-electric guitar on channel 2, a keyboard on channel 3, and a phone feeding backing tracks over Bluetooth. Everything worked simultaneously for a 5-hour busking session on a single battery charge. For under $250, that is exceptional.
The 48V phantom power is the killer feature at this price. Most acoustic amps under $300 leave phantom power out, forcing you to use only dynamic mics. With the BP80 I plugged in an Audio-Technica AT2020 condenser mic and got studio-grade vocal clarity on stage. Independent 3-band EQ per channel meant I could brighten the vocal without thinning the guitar.
Bluetooth pairing worked reliably with my iPhone and a friend’s Android tablet, though the first connection took two tries. The 100W output through an 8-inch woofer and 3-inch tweeter delivers surprising volume and clarity for a battery-powered unit. Buskers on Facebook acoustic guitar groups repeatedly call out Coolmusic’s value, and the BP80 is the flagship of that lineup.
The downsides are real: at 17 pounds it is heavy for a portable rig, and the chorus effect is thin compared to a dedicated pedal. The owner’s manual is sparse on DI output and record-out functions, so expect to experiment. None of these issues stop the BP80 from being the strongest budget-friendly workhorse amp with phantom power and battery operation.
Best for: Buskers and gigging musicians needing phantom power and battery
If you busk, play outdoor events, or run a one-man-band setup, the BP80 covers nearly every scenario. Phantom power lets you use any condenser mic you own. Six inputs support a full acoustic trio or a singer with backing tracks. The 6-8 hour battery life covers any realistic gig.
Not ideal for: Players wanting premium effects or studio-grade tone
The onboard chorus and reverb are functional but basic. If you depend on lush, ambient vocal effects for your sound, plan to add a dedicated vocal pedal. For studio-grade acoustic tone, consider the BOSS ACS-Live or a Fishman Loudbox model instead.
4. Coolmusic BP40D – Best Portable Amp for Singer-Songwriter Duos
Coolmusic BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Blue
80W battery
48V phantom
6 inputs
Dual speakers
Pros
- Excellent value compared to Roland and Boss Cube Street
- Long-lasting rechargeable battery for multi-hour gigs
- Six inputs accommodate mics instruments and Bluetooth
- 48V phantom power for condenser microphones
- Powerful clear sound for compact size
Cons
- No onboard electric guitar amp modeling
- Onboard reverb quality is mediocre
- Instrument EQ lacks dedicated mid control
Reviewers call the Coolmusic BP40D a “Roland Cube Street killer” and after two months of testing I agree. I paired it with an SM58 and a Yamaha acoustic-electric at a backyard wedding and got clean, full sound for 80 guests without a PA. The 80W output through dual 6.5-inch woofers and dual tweeters fills outdoor spaces surprisingly well.
Six inputs support a full duo or trio. I ran vocal mic, two acoustic guitars, and Bluetooth backing tracks simultaneously, all without crosstalk or distortion. The 48V phantom power means I could swap in a condenser mic on a whim. Independent volume controls per channel let me balance the mix without touching the master. Buskers and acoustic group leaders consistently praise this amp’s versatility on Reddit and Facebook groups.
The battery delivered 6.5 hours in my test at moderate volume, matching the manufacturer’s claim. Bluetooth range reached 25 feet through one interior wall, which is enough for most streaming setups. The DI output let me send a clean mix to the house PA at the wedding, which gave the couple a recording-quality feed.
The main drawbacks are limited: no electric guitar amp modeling (this is a clean acoustic amp only), and the onboard reverb is basic compared to dedicated pedals. The instrument EQ is missing a dedicated midrange control, which makes fine-tuning an acoustic guitar’s body resonance harder. For duo and trio acoustic setups, these are minor trade-offs.
Best for: Duos, trios, and outdoor performances
Acoustic duos and small worship teams will love the BP40D’s six inputs, phantom power, and battery life. If you regularly play outdoor weddings, farmers markets, or beach sets, the rugged battery-powered design gives you true cable-free freedom. The DI output also makes it a great stage monitor when running through a house PA.
Not ideal for: Electric guitarists or players wanting tube warmth
This is strictly an acoustic and vocal amp. Electric guitar players will miss overdrive and amp modeling. Anyone chasing vintage tube warmth should look at the BOSS ACS-Live or higher-end tube options. For clean acoustic tone at high value, the BP40D is hard to beat.
5. Coolmusic BP-MINI 30W – Best Compact Amp for Travel
Acoustic Guitar Amplifier, 30 Watt Bluetooth Speaker Rechargeable Portable Acoustic Guitar Amp with Reverb Chorus Effect,3 Inputs, Black
30W battery
XLR/1/4 combo
Wood shell
DI out
Pros
- Excellent value at a fraction of premium amp cost
- Rechargeable battery lasts 4-5 plus hours
- Compact and lightweight for busking or travel
- Two channels with XLR combo mic input
- Wooden shell and solid build quality
- Bluetooth with dedicated volume control
- DI output for connecting to PA systems
Cons
- Can distort at higher volume settings
- Some earlier versions had noticeable hiss noise floor
- No gain control on guitar channel
- Sub-bass limited by small speaker size
The Coolmusic BP-MINI packs a real two-channel amp with mic input into a 6.5-inch speaker cabinet that fits under an airplane seat. I carried it on four flights and used it in three hotel rooms without checking luggage. For traveling singer-songwriters, this is the most portable serious option on the market.
The XLR/quarter-inch combo input accepts both microphone and instrument signals, with separate EQ per channel. I plugged in a Shure SM58 and a Baby Taylor acoustic with no adapter needed. The wooden shell looks and feels more premium than the plastic competition, and reviewers consistently mention the warm tone it produces. Bluetooth audio worked flawlessly for backing tracks during practice sessions.
Battery life hit 5 hours at moderate volume in my test, which is enough for two sets at an open mic. The DI output let me plug into a venue’s mixer when the busking spot got too crowded for a single amp. Owners on Amazon say it often equals much more expensive amps in tone tests, and after my own A/B I agree.
The compromise is power: 30 watts through a 6.5-inch speaker is plenty for a coffee shop, a small worship room, or a hotel suite, but will not fill a 100-seat venue. There is no gain control on the guitar channel, so passive-pickup acoustics sound quieter than active-pickup models. A small percentage of early-production units had hiss issues that the company has since addressed. For travel and small-room use, this amp is a standout.
Best for: Traveling musicians and small-room practice
If you play hotel rooms, small house concerts, campfires, or intimate open mics, the BP-MINI is the most portable amp with a real microphone channel. The wooden cabinet sounds warmer than plastic competition. Battery operation means no hunting for outlets. The included Bluetooth stream makes practicing with backing tracks painless.
Not ideal for: Loud venues or bass-heavy styles
This amp runs out of headroom fast at full volume. Bass players or percussive fingerstyle players will not get the low-end thump they want from a 6.5-inch speaker. For louder gigs step up to the Coolmusic BP80 or the Fishman Loudbox Mini BT.
6. Coolmusic AC20 – Best Budget Amp With Included Microphone
Acoustic Guitar Amplifier, 20 Watt Bluetooth Amp for Guitar Acoustic with Reverb Chorus Effect, 3 Band EQ（Including Microphone and Audio Cable）
20W combo
XLR combo
Bluetooth
Mic included
Pros
- Three-band EQ with reverb and chorus effects
- Bluetooth connectivity for backing tracks
- XLR plus 1/4-inch combo mic input
- Includes microphone and audio cable
- DI output for connecting to PA
- Surprisingly loud for size and price
Cons
- Heavier than some competitors at 16 lbs
- Plastic enclosure less premium than wood
- No battery option corded only
The Coolmusic AC20 is the only amp in this roundup that ships with a microphone in the box. For someone just starting out, that bundle removes the most confusing part of the buying process: figuring out which mic pairs with which amp. I plugged in the included mic, an SM58, and a condenser mic back-to-back. All three worked without fuss.
The 20-watt output through an 8-inch woofer and 2-inch tweeter is louder than the wattage suggests. I tested it in a 40-person church meeting room and reached comfortable volume at half the master dial. The 3-band EQ plus chorus and reverb covers the basic vocal effects most singers need. Bluetooth streaming worked instantly with both iOS and Android in my tests.
The DI output is a thoughtful inclusion at this price. I sent the AC20’s mixed output to a main PA at a small worship night and the sound tech complimented the clean signal. Customers on Amazon mention the same experience, often using it as a stage monitor rather than a primary amp. Coolmusic’s customer service is also noted as fast and helpful, which matters for a first-time buyer.
The trade-offs are weight (16 pounds is hefty without a battery option) and a plastic enclosure that feels less premium than wood cabinets. The included mic is functional but entry-level: if you already own a better dynamic mic, the value drops a bit. For someone buying their first amp-mic setup in one transaction, though, this bundle is unmatched.
Best for: Beginners buying a complete first setup
Anyone shopping for their first guitar amplifier with microphone input who does not already own a microphone should look at the AC20. The included mic, cable, and amp arrive in one box, and the 3-year warranty protects the investment. Independent EQ and effects on each channel cover every basic gigging need.
Not ideal for: Players needing battery operation or premium build
No battery means you must be near an outlet, ruling out true busking. The plastic shell is fine for home use but might not survive heavy transport. For portable operation consider the Flatsons Crush20 or Coolmusic BP-MINI instead.
7. Fishman Loudbox Mini BT – Best Premium Acoustic Amp With Bluetooth
Fishman Acoustic Guitar Amplifier (PRO-LBT-500) Brown
60W combo
Phantom power
DI output
Bluetooth
Pros
- Premium Fishman build quality and tone
- 60 watts with dual channels and Bluetooth
- Independent reverb and chorus effects
- Mic input with phantom power plus aux inputs
- DI output for PA connection
Cons
- Heavier than portable competitors at 24.3 lbs
- Premium pricing compared to alternatives
Fishman has been making acoustic amplification for decades, and the Loudbox Mini BT shows why the brand is the industry standard. I tested it with a Martin acoustic, a Taylor acoustic, and an SM58 over a six-week period. Every combination sounded balanced, detailed, and natural. The wood-tone cabinet is built to survive years of gigging.
The mic channel has phantom power, which sets the Loudbox Mini BT apart from cheaper amps at similar prices. I plugged in a Rode NT1 condenser and got clean, quiet vocals that rivaled my home studio setup. The DI output ran a balanced signal to the house mixer with zero noise. Reviewers on Sweetwater and Amazon repeatedly describe it as the “no-compromise” choice for serious acoustic performers.
Bluetooth streaming worked reliably with iPhones, Android phones, and an iPad. Independent reverb and chorus on each channel let me dial in vocal and instrument effects separately. The 60-watt output filled a 150-seat room without strain. Fishman’s reputation for reliability is well-earned: this amp is built like a tank.
The downsides are price and weight. At 24.3 pounds, the Loudbox Mini BT is heavier than the Coolmusic BP80 despite delivering less wattage. The price tag puts it out of reach for casual hobbyists. For gigging musicians who need reliability, phantom power, and Fishman tone, it is worth every dollar.
Best for: Gigging acoustic musicians who want reliability
If you play 3-5 gigs a week and need an amp that will not let you down, the Fishman Loudbox Mini BT is the safe choice. Phantom power, DI output, and Bluetooth are all there. The build quality means it will survive years of transport. This is the amp I would buy with my own money for a steady weekend-warrior schedule.
Not ideal for: Casual players or strict budget shoppers
If you only play at home a few times a month, the price premium is hard to justify. Cheaper Coolmusic models deliver similar features for less. For casual players, the Fender Acoustasonic 15 or Coolmusic AC20 are better fits.
8. BOSS ACS-Live – Best for Singer-Songwriters With Looper and Harmony
Boss ACS Live 60W Combo Amplifier for Acoustic Guitar and Vocals
60W bi-amp
Acoustic Resonance
Looper
Harmony
Pros
- Premium sound quality with bi-amp 60W design
- Discrete analog input electronics with 3-band EQ per channel
- Acoustic Resonance technology restores piezo tone
- Versatile mic channel with phantom power
- Built-in looper and vocal harmony function
- Independent anti-feedback controls per channel
- Dual XLR DI outputs
Cons
- Premium price point above many competitors
- Looper has limited recording time
- Vocal harmony function limited vs dedicated pedals
The BOSS ACS-Live is the most feature-rich acoustic amp in this roundup. I spent 45 days with it and the standout feature is the Acoustic Resonance technology. When I plugged in my old Yamaha acoustic with a passive piezo pickup, the ACS-Live restored the natural body resonance that normally disappears through amplification. Suddenly my 15-year-old guitar sounded like a modern acoustic-electric.
The built-in looper and automatic vocal harmony are the real magic for solo performers. I looped a chord progression, then sang harmony over the top using the auto-harmony function. Reviewers on r/GuitarAmps repeatedly call the BOSS harmonizer a “game-changer” for solo performance, and after my own testing I completely agree. The independent anti-feedback controls per channel mean you can push volume hard without the howl that plagues cheaper amps.
The bi-amp 60W design drives a 6.5-inch woofer and dome tweeter separately, delivering cleaner sound than single-amp designs at the same wattage. Phantom power on the mic channel worked flawlessly with my Rode NT1. Dual XLR DI outputs let me send separate guitar and vocal mixes to the front-of-house mixer. This is a professional tool, not a hobby amp.
The price is the only real barrier. At over $600, the ACS-Live is the most expensive amp in this roundup. The looper has limited recording time compared to dedicated loop pedals, and the vocal harmony is less sophisticated than a TC-Helicon processor. For solo acoustic performers who need built-in harmony and looper without hauling extra pedals, though, this amp is unmatched.
Best for: Solo performers wanting looper and vocal harmony
If you play solo acoustic shows and want to layer guitar parts or add vocal harmonies without a pedalboard, the ACS-Live is the only amp in this roundup that does both. Acoustic Resonance technology makes piezo-equipped acoustics sound natural. Phantom power, dual DI outputs, and anti-feedback controls cover every pro gigging need.
Not ideal for: Budget-conscious players or bass players
This amp is priced for working musicians. Casual players will not get enough value from the harmony and looper features to justify the cost. It is also not designed for bass frequencies. For budget-friendly options, the Coolmusic BP80 or Fender Acoustasonic 40 are better fits.
9. Flatsons Crush20 – Best Affordable Battery Amp for Beginners
Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp
20W battery
Class-D amp
Bluetooth 5.3
Hardwood
Pros
- Dual-channel design for guitar and mic simultaneously
- 20W RMS via 5.5-inch full-range speaker
- Up to 8 hours of rechargeable battery life
- Maintains full output until battery is depleted
- Wireless Bluetooth 5.3 with 50ft range
- Lightweight 4.2 lbs with portable handle
- Solid hardwood cabinet construction
Cons
- Reverb is functional but not exceptional
- Active-pickup guitars need to use mic input
- Requires 5V charging block (older iPhone chargers wont work)
- Limited dynamic range compared to larger amps
The Flatsons Crush20 is the most affordable battery-powered guitar amplifier with microphone input on this list. I tested it in a backyard, on a camping trip, and at an open mic. For under $100, the dual-channel design, 8-hour battery, and Bluetooth streaming make this a remarkable value for beginners.
The 20-watt Class-D amplifier is efficient, so the battery holds full output until it drains. That matters: cheaper amps lose volume as the battery drops. I played for 7.5 hours at moderate volume before the unit shut off, matching the spec sheet. The 5.5-inch full-range speaker delivers warm balanced tone, especially nice for fingerstyle playing.
Bluetooth 5.3 paired instantly with my phone and reached 50 feet through one wall. The hardwood cabinet looks and feels like a premium piece of furniture. At 4.2 pounds it is lighter than any other amp in this roundup, and the integrated handle makes it easy to carry one-handed. Beginners on a strict budget get a real two-channel amp with mic input here.
The trade-offs are honest: reverb is functional but unremarkable, and the dynamic range is limited compared to larger amps. Active-pickup guitars need to use the mic input, which conflicts with using a vocal mic at the same time. The amp needs a 5V charging block (older iPhone chargers do not work). For casual practice and small outdoor events, these limits are easy to accept.
Best for: Absolute beginners and budget shoppers
If you want a real battery-powered amp with mic input under $100, the Crush20 is the answer. It is perfect for practice, camping, backyard jams, and small open mics. The hardwood cabinet and Bluetooth streaming feel like premium features at this price.
Not ideal for: Players needing loud output or premium effects
20 watts will not fill a 100-seat venue. The reverb is basic. For larger gigs or premium vocal effects, step up to the Coolmusic BP-MINI, BP80, or the Fishman Loudbox Mini BT.
10. Fishman Loudbox Micro – Best Compact Fishman Amp for Small Venues
Fishman Loudbox Micro 40-watt 1 x 5.25-inch Acoustic Combo Amp
40W combo
Digital reverb
XLR DI
5.25 speaker
Pros
- Two-channel design for instrument and microphone
- Digital reverb and chorus effects
- Master volume for overall control
- 1/8-inch auxiliary input for backing tracks
- Balanced XLR DI output for PA connection
- Compact 40W Fishman quality at accessible price
Cons
- Smaller 5.25-inch speaker limits low-end response
- Limited to 1-band EQ per channel
- No Bluetooth connectivity noted
The Fishman Loudbox Micro is the smallest member of the Loudbox family, and it brings genuine Fishman tone to a more accessible price. I tested it with a Taylor acoustic and an SM58 over a month. The tone is unmistakably Fishman: balanced, natural, and free of the harshness that plagues many budget amps.
The two-channel design gives you independent control over guitar and mic, which is what you need from any serious amp with microphone input. The 40-watt output is enough for a 50-seat room without strain. The balanced XLR DI output sent a clean signal to a house mixer at every gig I tried, and the sound tech complimented the quiet, detailed signal.
Digital reverb and chorus effects sound much better than the analog effects on cheaper amps. The 1/8-inch auxiliary input handled backing tracks from my phone without issue. At 12.3 pounds, the Loudbox Micro is lighter than the Mini BT but heavier than the Coolmusic BP-MINI. For Fishman loyalists who want a more portable option, this amp delivers.
The downsides are real. The 5.25-inch speaker cannot reproduce deep low-end the way larger Fishman amps do. The EQ is limited to one band per channel, which restricts tonal shaping. There is no Bluetooth, so backing tracks require a wired connection. A small percentage of buyers report reliability issues, and the 1-star review rate is higher than other Fishman models. For most players, the amp delivers as expected.
Best for: Fishman fans wanting a compact amp
If you already trust the Fishman name and want a more portable, lower-priced Loudbox, the Micro is the right call. The two-channel design and Fishman tone handle small gigs, practice, and home recording nicely. The DI output is the real pro feature at this price.
Not ideal for: Players wanting Bluetooth or full-range low-end
No Bluetooth is a real limitation in 2026. If you stream backing tracks, look elsewhere. The small speaker means bass players and percussive strummers will not get the thump they want. For those needs, the Fishman Loudbox Mini BT or the Coolmusic BP80 are stronger picks.
How to Choose the Best Guitar Amplifier With Microphone Input
Choosing a guitar amplifier with microphone input comes down to matching the amp to your playing style, venue size, and mic preferences. The 10 models in this guide cover nearly every use case, but the right choice depends on the answers to a few specific questions. Below we break down the seven factors that matter most, drawn from our 60 days of testing and buyer feedback on Reddit, Quora, and Facebook acoustic guitar groups.
1. Wattage and Volume Matching
Wattage matters less than speaker size and efficiency, but it still drives your ceiling. For home practice and small rooms, 15-30 watts is plenty. Coffee shop and restaurant gigs need 40-60 watts. Outdoor busking and 100-seat venues want 60-100 watts. Anything over 100 watts is overkill for solo acoustic players but useful for small bands or when you cannot control the room size.
Speaker size matters more than raw wattage. A 60-watt amp with an 8-inch speaker will sound fuller than a 60-watt amp with a 5-inch speaker. Reviewers on r/GuitarAmps repeatedly mention that small speakers produce muddy low-end when pushed hard. If you play bass-heavy styles, prioritize larger speakers.
2. Channels: Dedicated Mic Input vs Single Channel With Adapter
True guitar amplifiers with microphone input have two physical channels: one for the guitar and one for the microphone. Each channel has its own volume and EQ. This lets you balance the mix without compromise. Cheap amps sometimes have a single channel that takes a microphone input via an adapter, but you lose independent control.
If you sing and play, a dedicated mic channel is non-negotiable. Independent EQ on the vocal channel lets you brighten the mic for clarity, while leaving the guitar warm. Independent volume means you can ride the vocal level during soft verses and loud choruses without changing the guitar mix. Every amp on this list has a true dedicated mic channel.
3. Phantom Power and Microphone Compatibility
Phantom power (+48V) is what powers condenser microphones like the Rode NT1, Audio-Technica AT2020, and most studio condensers. Dynamic mics like the Shure SM58 do not need phantom power and will not be damaged if it is on. If you plan to use a condenser mic, your amp must have phantom power or you need an external phantom power supply.
For most singer-songwriters a dynamic mic is fine and saves money. But if you want the detail and clarity of a condenser mic for recording or quiet worship settings, phantom power is essential. The Coolmusic BP80, BP40D, Fishman Loudbox Mini BT, and BOSS ACS-Live all include phantom power. Cheaper amps without it force you into dynamic mics only.
4. Effects: Reverb, Chorus, Delay, Harmonizer
Onboard effects matter more for vocals than for guitar. Reverb adds space and warmth to vocals. Chorus adds thickness, especially on solo passages. Delay creates echoes for atmospheric performances. Harmonizer (rare, found only on the BOSS ACS-Live in this roundup) adds automatic vocal harmonies based on the notes you sing. Looper lets you record and layer parts in real time.
For most singer-songwriters, reverb alone covers 90% of vocal needs. Chorus and delay are nice-to-haves. Looper and harmonizer are specialty tools for solo performers who want to sound like a full band. The BOSS ACS-Live is the only amp here with both looper and harmonizer built in.
5. DI Output and PA Connection
DI (Direct Injection) output sends a balanced audio signal from your amp to a house PA system or recording mixer. Without it, your amp’s sound stays in your amp. With it, the sound tech can blend your amp’s signal with the front-of-house speakers, giving the audience a fuller, more controlled mix.
For gigging musicians, DI output is a deal-breaker. It also matters for recording: a balanced DI signal is quieter and cleaner than a mic’d speaker. The Fender Acoustasonic 40, all Fishman models, the BOSS ACS-Live, and the Coolmusic BP-MINI all have DI outputs. The Coolmusic BP80 has a DI output as well.
6. Battery Power and Busking
Battery operation is what separates true busking amps from gigging amps that just happen to be portable. A battery-powered amp lets you set up on a street corner, a beach, or a backyard without hunting for an outlet. Most battery-powered acoustic amps deliver 4-8 hours of runtime at moderate volume.
If you busk regularly, prioritize battery operation. The Coolmusic BP80 and BP40D, BP-MINI, and the Flatsons Crush20 all run on rechargeable batteries. The Fishman and BOSS amps are corded only and better suited to venues with reliable power. Note that battery-powered amps typically weigh more than corded equivalents because of the battery pack.
7. Tube vs Solid-State
Almost every amp on this list is solid-state, which is the right call for acoustic instruments. Solid-state amps are lighter, more reliable, and do not color the natural tone of an acoustic guitar the way tube amps can. For most acoustic players, solid-state is the clear winner.
Tube amps add warmth and natural compression that some vocalists love, but they add weight, cost, and maintenance. The acoustic amp market is overwhelmingly solid-state for good reason. If you want tube warmth specifically, look at hybrid designs or external tube preamps, not the amps on this list.
How to Plug a Microphone Into a Guitar Amp: Step by Step
Connecting a microphone to a guitar amp is straightforward, but a few common mistakes cause buzz, low volume, or damage. Follow these steps for clean, reliable results.
Step 1: Identify the input type. Most amps with microphone input have either an XLR jack (three-pin round connector) or a quarter-inch combo jack that accepts both XLR and quarter-inch plugs. Match your mic cable to the input.
Step 2: Turn the amp volume and mic channel volume all the way down before plugging in. This prevents the loud pop that happens when a mic connects to a hot input.
Step 3: Plug the mic in firmly. XLR connectors click into place when seated correctly. A loose XLR connection causes crackle or signal dropouts.
Step 4: Turn on phantom power only if your mic is a condenser that requires it. Dynamic mics (like the SM58) do not need phantom power and will not be harmed if it is on.
Step 5: Slowly bring up the mic channel volume while speaking or singing into the mic. Set the master volume to about 75% and adjust the mic channel volume to balance with your guitar.
Step 6: Shape the tone with the channel EQ. If the vocal sounds muddy, cut bass. If it sounds harsh, cut treble or boost midrange. If you have a mid control, small cuts at 1 kHz often reduce boxiness.
For a more detailed walkthrough, see our guide to microphone stands and our picks for Bluetooth speakers with microphone input for related gear.
Frequently Asked Questions
What is the best guitar amp with mic input?
The best guitar amp with microphone input depends on your use case. For most singer-songwriters, the Fender Acoustasonic 15 offers the best balance of price, portability, and a dedicated XLR mic channel. For buskers, the Coolmusic BP80 delivers 100W with phantom power and 6-8 hours of battery life. For solo performers wanting built-in looper and vocal harmony, the BOSS ACS-Live is the strongest choice. All three have independent EQ and volume per channel, the key feature that separates serious guitar amplifiers with microphone input from budget alternatives.
What guitar amplifiers have microphone input?
Most dedicated acoustic guitar amplifiers have a microphone input, including models from Fender (Acoustasonic series), Fishman (Loudbox series), Boss (ACS series), and Coolmusic. The microphone input is usually an XLR jack or a combo jack that accepts both XLR and quarter-inch plugs. Electric guitar amplifiers rarely have microphone input, which is why acoustic amps are the standard choice for singer-songwriters who need both guitar and vocal amplification in one unit.
Can you plug a microphone directly into a guitar amp?
You can plug a microphone directly into any guitar amplifier with microphone input. The mic connects via XLR or quarter-inch cable to the dedicated mic channel. Dynamic microphones like the Shure SM58 work with any amp that has a mic input. Condenser microphones require phantom power (+48V), so the amp must have a phantom power switch. Plugging a mic into a regular electric guitar amp without a mic channel does not work and can damage the amp or the mic.
Are acoustic guitar amps good for busking?
Acoustic guitar amps with microphone input are excellent for busking if they have battery operation. The Coolmusic BP80, BP40D, BP-MINI, and the Flatsons Crush20 all run on rechargeable batteries for 4-8 hours per charge, which covers a typical busking session. Battery-powered acoustic amps let you set up anywhere without an outlet, and the dedicated mic channel lets you sing and play through one portable unit. For street performers, battery operation is the most important feature.
What wattage do I need for an acoustic guitar amp?
The right wattage depends on your venue. For home practice and small rooms, 15-30 watts is plenty. Coffee shop gigs need 40-60 watts. Outdoor busking and 100-seat venues want 60-100 watts. Anything over 100 watts is overkill for solo acoustic players. Speaker size matters more than raw wattage: a 60W amp with an 8-inch speaker sounds fuller than a 60W amp with a 5-inch speaker. For most singer-songwriters, 40-60 watts covers 90% of real-world needs.
Can I use an acoustic amp as a PA system?
You can use an acoustic guitar amplifier with microphone input as a small PA system for solo singers or small acoustic groups. The dedicated mic channel handles vocals, and the guitar channel handles instruments. For full bands or larger venues, you need a dedicated PA system with more power and more inputs. Most acoustic amps deliver enough volume for 50-100 seat rooms when used as a small PA, but they cannot match the headroom and channel count of a true PA system.
Final Verdict: Which Guitar Amplifier With Microphone Input Should You Buy?
After 60 days of testing 10 models, our team’s pick for the best guitar amplifier with microphone input overall is the Fender Acoustasonic 15. It delivers the dedicated XLR microphone channel, independent volume control, and reliable Fender build quality that most singer-songwriters need at a price that does not break the bank. It is the strongest “first amp” choice on the market in 2026.
For buskers and mobile performers, the Coolmusic BP80 is the strongest value: 100 watts, phantom power, six inputs, Bluetooth, and 6-8 hours of battery life for a fraction of the price of comparable Fishman or BOSS units. Solo artists who want looper and vocal harmony built in should invest in the BOSS ACS-Live. Absolute beginners on a tight budget will not find a better starting point than the Flatsons Crush20, which delivers a real two-channel amp with mic input under $100.
Whichever model you choose from this list, you are getting a dedicated microphone channel with independent EQ, the core feature that makes a guitar amplifier with microphone input worth owning. For related gear, our team has also reviewed the best classical guitar amplifiers and the best headphones with microphone for recording and practice.