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Fishman Loudbox 100 Acoustic Guitar Amp

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The Fishman Loudbox 100 Acoustic Guitar Amplifier features 100W, 2 channels, dedicated drivers, and weighs less than 25 lbs. It's a superbly portable acoustic instrument amplifier for the active music... Click To Read More About This Product

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The Fishman Loudbox 100 Acoustic Guitar Amplifier features 100W, 2 channels, dedicated drivers, and weighs less than 25 lbs. It's a superbly portable acoustic instrument amplifier for the active musician. The secret to the Loudbox 100's sound lies in its 2 power amps and 2-way speaker system. This powerful combination results in higher sound pressure levels and cleaner acoustic tones, watt-for-watt, than comparable acoustic amps.

With all the features a gigging performer demands, this amp meets a variety of needs. Three bands of EQ with feedback-fighting controls give you incredible control over your tone.

You'll find this lightweight and compact amp is as comfortable in your home studio as it is on stage. It easily passes the "one-trip" test, for those times you carry both your instrument and your amp to the car or into the club.

The 2-channel Loudbox 100 brings together a wish list of the essential features you've been looking for. The front panel includes inputs for acoustic instruments, an XLR microphone and a CD player or drum machine. Dual EQ sections include bass, midrange and treble controls for easy, effective tone shaping. Vanquishing troublesome acoustic feedback is simple with independent anti-feedback filters and phase switches for each channel.

Also included are 5 digital effects you can really use: two halls, two plates, and a smooth chorus. A convenient mute switch keeps things quiet when you tune up or take a break. The Loudbox 100 also features a headphone jack for silent jamming or practicing.

On the rear panel, good things come in threes with D.I.s for channels 1 & 2, plus a third summed Mix-D.I. output (watch your soundperson smile). For pedal-heads, each channel has its own effects loop, a tuner out (Ch.1) and a 1/4" jack for a remote mute switch. With the Loudbox 100 on the floor, the speaker's ten-degree tilt-back angle helps to project your sound up to ear level. So what are you waiting for? Grab your guitar and your Loudbox 100 and go out and make some music!


  • 1/4" input
  • XLR mic input
  • CD player input
  • Phantom power
  • Feedback control
  • Light weight for easy portability
  • Rated Power:
  • Cumulative: 100Wrms
  • Woofer Amp: 90Wrms continuous
  • Tweeter Amp: 10Wrms continuous
  • All measurements @ nominal line 120V, 60Hz
  • Acoustic Response:
  • SPL @ 1 Meter 114dB SPL
  • Frequency Response 80Hz — 20kHz ± 4dB
  • Power Consumption: 150W max
  • Input Impedance:
  • Ch.1: 10M Ohm
  • Ch.2, 1/4"Jack (tip): 10M Ohm
  • Ch.2, 1/4"Jack (ring): 10M Ohm, 10k Ohm with 15V phantom power
  • Ch.2, XLR Input: 2.4k Ohm Balanced
  • Aux Input (stereo): 10k Ohm
  • Nominal Input Level:
  • Ch.1: -20dBV/-10dBV with 10dB pad
  • Ch.2, 1/4" Jack (tip): -20dBV/-10dBV with 10dB pad
  • Ch.2, 1/4" Jack (ring): -20dBV/-10dBV with 10dB pad
  • Ch.2, XLR Input: -40dBV/-30dBV with 10dB pad
  • Aux Input (stereo): -10dBV
  • Maximum Recommended Input Level:
  • Ch.1: 6dBV
  • Ch.2, 1/4"Jack (tip): 6dBV
  • Ch.2, 1/4"Jack (ring): 6dBV
  • Ch.2, XLR Input: -14dBV
  • Aux Input (stereo): 6dBV
  • Phantom Power (Ch.2 Only):
  • XLR Input: 24Vdc/1.2k Ohm dc Source Impedance per pin
  • 1/4" Jack (ring): 15Vdc/10k Ohm dc source impedance
  • Tone Controls and Anti-Feedback (Ch.1 and Ch.2):
  • Low: ± 10dB @ 100Hz (shelving)
  • Mid: ± 12dB @ 1.2kHz (resonant)
  • High: ± 12dB @ 10kHz (shelving)
  • Anti-Feedback Range: -14dB @ 20— 400Hz (Hi — Q resonant)
  • Digital Effects:
  • Program 1 Hall 1
  • Program 2 Hall 2
  • Program 3 Chorus
  • Program 4 Plate 1
  • Program 5 Plate 2
  • Channel 1 & 2 D.I. Out
  • Output Impedance: 600 Ohm balanced
  • Phantom power tolerant, ground isolated
  • Channel 1 & 2 Effects Sends:
  • Output Impedance: 2.2k Ohm
  • Output Voltage: +3dBV (1.4Vrms max) -10dBV Nominal
  • Channel 1 & 2 Effects Returns:
  • Input Impedance: 20k Ohm
  • Input Voltage +3dBV (1.4Vrms max) -10dBV Nominal
  • Sends and returns are compatible with battery operated effects processors
  • Mix D.I. Out:
  • Output Impedance 600 Ohm balanced
  • Phantom power tolerant, ground isolated
  • Tuner Out:
  • Output Impedance: 5k Ohm
  • Speaker System:
  • Woofer: 8" paper cone
  • Tweeter: 1" soft dome, rare earth magnet, ferrofluid cooled
  • Tweeter Level Up to 6dB cut
  • Crossover: 4kHz (Bi-amplified with active crossover)
  • Baffle Angle: 10 Degrees
  • Physical:
  • Dimensions 16" x 13.5" x 11.5" (40.5cm x 34cm x 29cm)
  • Weight: 23 lbs (10.5 kg)
Pro Coverage
One year parts and labor warranty.

  • Customer Reviews

Review Snapshot

by PowerReviews

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(11 of 11 customers found this review helpful)


Great Little amp!

By Gabriel Dehoyos

from Dallas Texas

I wanted to upgrade from my Roland AC6 but stay light enough for a one man band. I play mostly classical guitar gigs weddings, donor events for around 45-100 people so I needed a amp loud enough to cut through but not get in the way. I found the Loudbox to fit this perfectly its a 100w but its loud and the sound quality is very clear. The amps preamp is pretty hot, I tried with and without my Lrbaggs gig pro and found I did not need it i will still use it. What ever your guitar sounds like that is what you hear, it does not color the sound. I read some complaints about it being dry, harsh and so on. Not true it is a sensitive amp so if you sound bad the amp will only amplify that, but Im a trained musician and found the amp to reproduce my sound very well. The bass is deep and sweet, mids not boomy and highs clear and bell like, I like that the tweeter has a separate amp and volume, no distortion. Built like a small tank, my only complaint are the knobs they feel loose, they are mounted to the PC board and not bolted to the chassis, may be a problem a few years from now. For the price I wish it came with a storage bag but you have to buy it separate. My set up now sounds great Cordoba C9 with K&K transducers, lRBaggs gig pro preamp, into a loud box. Wanted to try the Ultrasound but could not find one to play so I decided to try the Fishman and if I did not like it I would get the Ultrasound, after half an hour I walked out with the Fishman.

(3 of 3 customers found this review helpful)


Extremely clear and capable amplifier

By Andrew Otwell

from Woodstock, GA

I have used my Fishman Loudbox 100 for a variety of uses. Initially purchased for guitar and violin amplification, it has always produced very impressive results. The balance of power, high clarity and low definition is very impressive. The built-in digital effects are also quite good. This unit sounded so good that I later decided to use it as a DJ amplifier for a wedding. I used it for its portability during the ceremony by playing an iPod through it. Afterward, I carried it over to the reception hall and used it as a subwoofer (believe it or not). I boosted the bass and reduced the tweeter and turned off the effects. The clear sound definition completely filled a large venue and I did not have any signal clipping or woofer overload. The unit sounds so good (especially for its size) that most people stare at it for a second or two trying to figure out how such a small package can produce such a large, clear sound. I would definitely recommend this amplifier for guitar and/or violin amplification.

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