Roland AC-90 - 90-watt 2x8" Stereo Acoustic Amp

90W Lightweight Acoustic Guitar Amplifier with Mic Input, Anti-feedback Control, Stereo Effects, and Sub Output
Roland AC-90 - 90-watt 2x8
Roland AC-90 - 90-watt 2x8
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Roland AC-90 - 90-watt 2x8" Stereo Acoustic Amp
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A Versatile and Portable Acoustic Amp that Sounds Great!

Roland's AC-90 acoustic guitar amplifier represents the newest and highest-powered member of the company's great AC series. While lightweight and ultra-portable, the AC-90 doesn't skimp on the sonics, featuring a stereo 2-way speaker arrangement, 90 watts of power, stereo multiband chorus, and great low-frequency performance. Designed for acoustic performance, this amp includes feedback control, channels for both instruments and microphones, a tilt stand, and a handy carrying case. Want live acoustic performance? the easy-to-transport, incredible-sounding Roland AC-90 has it.

Roland AC-90 Acoustic Guitar Amplifier at a Glance:
  • 90 watts in a compact package
  • Anti-Feedback
  • Stereo effects
  • Also functions as a PA
90 watts in a compact package

With 90 watts of stereo power (45W+45W) driving top-quality neodymium speakers, the AC-90 delivers exceptional full-range performance - from shimmering, crystal-clear highs to full-impact bottom end. This amp is more than capable of cutting though a wall of sound.It's lightweight, too, so you can take it practically anywhere!


Enjoy maximum volume without feedback, thanks to the AC-90's sophisticated ANTI-Feedback feature. This allows you to roam the stage with confidence - even with 90 watts of powerful sound at your back.

Stereo effects

The AC-90's onboard stereo effects benefit from Roland's decades of research and development. Experience the amazing spatial depth and lush sound of the stereo multiband chorus, complete with newly developed WIDE mode. Delay and reverb are provided as well, and can be controlled via footswitch.

Also functions as a PA

In addition to its amazing acoustic-guitar amplification qualities, the AC-90 can also function as a portable PA system thanks to its dual-channel architecture, sub output and phantom-powered Microphone input. Sing and play guitar through one convenient amplifier, with impressive power and full-range performance.

Roland AC-90 Acoustic Guitar Amplifier Features:
  • 90 watts (45W + 45W) of power
  • Natural stereo acoustic sound
  • Dual channels
  • Sub output
  • Phantom-powered mic input
  • Multi-band stereo chorus, reverb/delay, anti-feedback control
  • Includes onboard tilt stand and carrying case
The Roland AC-90 is a great portable acoustic guitar amp that doubles as a mini PA!

Additional Media

Acoustic Guitar Amp Buying Guide
Guitar Amp Buying Guide
Roland AC-90 Owners Manual

Tech Specs

Number of Channels 2
Total Power 90W (45W + 45W)
Speakers 2 x 8"
Stereo Yes
Inputs Ch 1: 1 x Instrument (Active, Passive), Ch 2: 1 x Combo (XLR/TRS), 1 x Aux (1/4"), 2 x RCA (Aux)
Outputs 1 x Headphones (1/4"), 1 x DI Tuner, 1 x Subwoofer, 2 x XLR, 2 x TRS
Effects Chorus, Reverb
EQ 3-band
Feedback Control Yes
Footswitch I/O Yes
Height 12.88"
Width 18.31"
Depth 11.88"
Weight 30.69 lbs.
Manufacturer Part Number AC-90

Customer Reviews

Based on 4 reviews
Write your review

Great amp, light,sound is great, WOW

I'm using the amp with a gr55 git synth. It does the job!!!!!!!!!
Music background: pro muscian

Always wanted it!!!

I heard this amp at a store about 7 years ago and it blew me away with the natural sound it provides. At the time, I was only playing at home and I had not started to write original songs and playing live, so I could not justify buying it (around $900). So, I bought it's next brother, the AC-60 instead, which is pretty good and a lot cheaper (around $500 or $600 at the time; do not recall exactly). When I started writing original songs and then formed a singer-songwriter duo with a singer/lyricist, per Aaron's recommendations (Sweetwater), I bought a Bose L1, MII system for our live shows. In spite of the Bose being the best you can get, I still craved the AC-90. So, when I saw it at the current price and with 36-months with no interest, I saw the opportunity to get it. I am very happy with it. The AC-90 sounds much, much better than the AC-60; the addition of 2 tweeters gives so much clarity to the mid/hig frequencies of the guitars and voice, and the 8" speakers (versus the 6.5" on the AC-60), really give stronger sense of fullness of the low/mid frequencies. I play 6, 12 and Spanish guitars with it and the sound is just beautifully natural and has enough power for the small venues we normally play live (up to 50 people and indoors), for which the Bose system is too powerful. The AC-90 is about 10-lbs heavier than the AC-60, yet still portable. It comes with a beautiful and very practical bag; it needs a short handle in addition to the shoulder strap, though. I do not have anything to say about the effects because I do not use them. I am a finger-picking rhythm guitar player and all the effects throw my timing off when I use them. Plus, I like the natural sound of my guitars without any electronic alterations. We plan to perform live using both amps, the AC-90 with my guitars and the AC-60 for her vocals. We do this because of her vocal range; she does not need the extra bass the AC-90 provides and the AC-60 has good enough high range for her vocals. To supplement our live act, we will use a KC-150 to play our backup tracks, that way each of us would have a dedicated amp for clearer sound individually. I waited 7 years to get the AC-90. I am very happy with it!!
Music background: Songwriter, recording artist, home studio recording engineer

roland ac 90

I cant get over how true the replication of sound this has. I was also looking at the Fishman Artist and AER 60. The AER is well built and has a strong reputation in acoustic amps but i honestly think you r paying for the "name" and it hasn't got the features the roland and fishman has. the Fishman is a strong contender as an acoustic amp and great sounding, but i chose the roland because of its history in building a quality product . SHOP NO FURTHER
Music background: hobby/gigs

pros and cons

pros : nice clear natural sound.plenty control,flexibel,great bag.cons: no real stereo but pseudo.stereo inputs are useless.
Music background: active player
See also: Acoustic Guitar Amplifiers, Roland, Roland Acoustic Guitar Amps