Roland Ac-33-Rw

Roland AC-33 Acoustic Chorus Guitar Amplifier (Rosewood)

The World's First AA Battery-Powered Acoustic Guitar Amp - Rich, deep, stereo sound to go - the AC-33 is the world's first AA battery-powered amp made specifically for acoustic guitar. Portable yet powerful, the AC-33 provides true stereo sound, Guitar and Mic/Line channels, custom-tailored effects, anti-feedback, and a Phrase Looper.

This amp was made to go places no amp has gone before. Thanks to its battery-power capability, the AC-33 lets you take your act anywhere - into the backwoods, onto the streets, or wherever your imagination leads you.


Rosewood Finish!

Now the AC-33 is available with beautiful rosewood-look cabinets, offering an alternative to the standard stage-ready black finish. The attractive woodgrain styling perfectly matches the atmosphere of your living room or studio, as well as the aesthetic of your acoustic guitars.

Natural, Stereo Sound

Equipped with Roland's latest DSP technology, the AC-33, delivers pure, rich acoustic sound with projection far beyond its size. Its true stereo design (15 watts x 2) enables brilliant stereo/multi-band chorus with "Wide" mode, plus shimmering reverb and 3D-type ambience effects tailored specifically for acoustic guitar.

Strum and Sing

The AC-33 provides two discrete channels: Guitar and Mic/Line. Plug in an acoustic guitar and a microphone (or line-level instrument) and mix them separately. Both channels have dedicated controls for volume, multi-band EQ, and chorus. The Mic/line channel offers both XLR and 1/4" inputs. You can also connect an MP3/CD player to the stereo AUX input for play-along practice or performance. Master volume, reverb, ambience, and anti-feedback are provided as well.

Phrase Looper

This amp was made to go places no amp has gone before. Thanks to its battery-power capability, the AC-33 lets you take your act anywhere - into the backwoods, onto the streets, or wherever your imagination leads you.

The AC-33's onboard Phrase Looper lets you record, loop, and jam over your own guitar riffs or incoming audio from the AUX input. Record and loop up to 40 seconds at a time, and amaze your listeners with sound-on-sound performances that you create on the spot.



  • 30 watts (15 W+15 W) of natural, stereo acoustic sound through twin speakers
  • Runs on AC power or eight AA batteries (or AA rechargeable Ni-MH batteries)
  • Dual-channel configuration: Guitar and Mic/Line channel
  • Reverb, chorus, and ambience effects (Ambience adds spatial, 3D-type depth to the sound)
  • Phrase Looper with 40 seconds of record time
  • Stereo AUX input (connect MP3/CD players, etc), headphone output
  • Anti-feedback function
  • Built-in tilt-back stand
  • Removable battery cartridge for easy battery replacement


Further Specs:

  • Rated Power Output:
  • 15 W + 15 W (when using the AC adaptor)
  • 10 W + 10 W (when using the Alkaline batteries)
  • Nominal Input Level (1 kHz):
  • GUITAR Channel: -10 dBu
  • MIC/LINE Channel: -50 dBu/-20 dBu
  • AUX IN: -10 dBu
  • Nominal Output Level (1 kHz): LINE OUT: -10 dBu
  • Speakers: 12 cm (5 inches) x 2


  • [GUITAR Channel]:
  • VOLUME Knob:
  • BASS Knob
  • MIDDLE Knob
  • TREBLE Knob
  • [MIC/LINE Channel]
  • VOLUME Knob
  • BASS Knob
  • TREBLE Knob
    • ON/OFF Switch
  • [LOOPER]
  • STOP/CLEAR Button
  • [AUX IN Controls]
  • LEVEL Knob
  • MASTER Knob
  • POWER Switch
  • Indicators: REC, PLAY, OVERDUB, POWER



  • Guitar: Channel Input Jack (1/4-inch phone type)
  • MIC/LINE: Channel Input Jacks(XLR type, Balanced) - (1/4-inch TRS phone type, Balanced)
  • AUX IN Jacks: L, R (RCA phono type)-(Stereo miniature phone type)
  • LINE OUT Jacks: L (MONO), R (1/4-inch phone type)
    • PHONES Jack: (Stereo 1/4-inch phone type)
    • DC IN Jack
    • FOOT SW Jack:[EFFECTS]:
    • (1/4-inch TRS phone type)
    • FOOT SW Jack:[LOOPER]
    • (1/4-inch TRS phone type)

    Power Supply:

    • AC Adaptor (included, DC 13 V)
    • Dry battery LR6 (AA) type (alkaline) x 8
    • Rechargeable Ni-MH battery (AA, HR6) type x 8
    • Current Draw: 490 mA
    • Expected battery life under continuous use:
    • Alkaline battery: Approx. 8 hours
    • Rechargeable Ni-MH battery (AA, HR6): Approx. 9 hours
    • These figures will vary depending on the actual conditions of use.
    Shipping Information

    Our on-line store is open 24/7 and we ship Monday through Friday, excluding bank holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 2:00 p.m. GMT Orders in high demand will have an estimated production time listed on its product page and will ship once we havevtaken delivery. Please contact us for estimated delivery on out of stock items.

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