Marshall AS100D

Acoustic Combo-Stereo

Amplifying acoustic instruments in high volumes is an art in itself. The almost linear reproducibility of the AS100D is not only a natural representation of the instrumental sound, but is also an important prerequisite for avoiding feedback. For this purpose, the AS100D also provides two notch filters and three phase reversal circuits. The latter can be switched on for the two Acoustic Instrument Channels (1 and 2), as well as the microphone channel. For instruments with stereo output, the channel 1 and channel 2 tone controls can be assigned to the common input via the "Link" switch.

In addition to the Aux-Channel, the extensive sound control and the enormous connection flexibility, the digital stereo effect section in particular makes the AS100D a professional all-rounder in terms of acoustic amplification. Sixteen different effect programs can thereby be switched on and tuned to the main parameters separately.

  • Output Power: 2 x 50 W RMS
  • Equipped with: 2x 8 "Special Design speaker with rubber surround and 2 polymer high-frequency horns / tweeters
  • Digital effects section
  • 4 Channels
  • 2 Separate channels with instrument input
  • Link function for channel 1 and 2 (stereo tools)
  • 2 Channels with microphone input and 15 V phantom power
  • Stereo input channel for additional signal sources
  • Anti Feedback section with two notch filters
  • Phase circuit separately for the three channels
  • Parallel stereo effects loop with channel mapping
  • Balanced stereo DI outputs for console port
  • Stereo line outs for additional amplifiers / Active monitors
  • Dimensions (W x H x T): 60 x 54 x 26.1 cm
  • Weight: 21 kg
  • Includes a footswitch
No JavaScript? No Audio Samples! :-(

Sound samples

  • Pop Guitar Line
  • Acoustic Duo
  • Acoustic Duo Line
  • Bossa
  • Bossa Line
  • Pop Guitar

Further information

Power in Watts 100
Speaker size 2x 8"
Channels 4
Reverb Yes
Effects Unit Yes
External FX Loop Yes
Microphone Input Yes
Line Input Yes
Battery Operation No
Footswitch Connector Yes
Incl. Footswitch Yes

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31 written ratings Read all reviews


This amp is fantastic if you are considering it I would recommend you go for it. It makes my acoustic guitars sound superb, I also plug a Palmer amp emulator into channel two for my electric guitar & this also is fantastic. I can plug a vocal mic into channel three & still have an
aux in for a drum machine or other gismos!

The on board effects are all I need for live performance with reverbs, chorus, delay, modulation & a few combos of effect. All in lovely stereo!! There is also an effects loop if I ever need more. I have never needed the volume control over 10 o'clock this is a nice loud amp if needs be!!!

The set-up has replaced a big two amp, pedal board set-up for Me!

Total Marshall "Built Like a Tank" quality & Thomann 3 year warranty!! Fantastic!!

I also got the cover to protect it. This is My new best friend!!!
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Amazing Sounding Acoustic AMP!

Seanachie, 12.07.2018
I bought the AS100D 3 years ago and long story short it is an amazing sounding amplifier for acoustic guitars and a really good amplifier for vocals as well!

Mainly I use it for practice with band, some solo performances and few performances with the band. It works amazing with everything. Tried it with two guitars and vocals plugged in and at a high volume and it worked like a charm!

The main guitar channel offers alot of effects for your acoustic guitar as well so you can basically do anything. There is also some basic functions for second guitar and vocal. I think for smaller giggs it can stand on its own as a main speaker, even in a large room, as it proved itself in a few of those solo performances.

The sound is very warm and clean as I think is standard for Marshall amps. The only real problem and bad experience I have is the leather handle on top is almost cut through, I'm not sure how it is with some other amps. It seems well built but it just didn't work out for me I guess.

For accoustics I would reccomend this Marshall AS100D 10/10!
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