The highly anticipated addition to Roland’s AC-series amp family has arrived! Loaded with high-performance speakers and 90 watts of power, the AC-90 provides a rich, powerful sound while remaining lightweight for easy transport. The AC-90 employs a stereo 2-way speaker system that delivers transparent highs — great for the built-in multi-band stereo chorus — while also providing incredibly powerful low-frequency performance.



  • Lightweight yet powerful featuring state-of-the-art speaker technology
  • Stereo 2-way speaker system provides full-range performance
  • Natural stereo acoustic sound
  • 90 watts of stereo power (45W+45W)
  • Dual channels: Guitar input (Piezo/Magnetic) and phantom-powered Mic/Line input
  • Roland’s famous stereo multi-band chorus with WIDE mode, plus reverb/delay
  • Anti-feedback control feature
  • Convenient onboard tilt stand; speaker stand mountable
  • Quality carrying case included

Legacy of Excellence

The AC-90 isn’t just any new amp on the block … it’s the long-awaited addition to Roland’s industry-leading AC-series amp family. Roland’s reputation for world-class sound, amazing performance, portability, and top-quality construction in the AC series are all upheld in this stunning new amplifier.

Anti-Feedback Control

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.


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.

Power Performer

With 90 watts of stereo power (45W+45W) driving top-quality 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.

Immersive Stereo FX

The AC-90’s onboard stereo effects benefit from Roland’s decades of industry-leading R&D. Experience the amazing spatial depth and lush sound of the stereo multi-band chorus, complete with newly developed WIDE mode. Delay and Reverb are provided as well, and can be controlled via footswitch.


                    Rated Power Output

                    45 W + 45 W

                    Nominal Input Level (1 kHz)

                    GUITAR Channel: -10 dBu
                    MIC/LINE Channel: -50 / -10 dBu
                    AUX IN: -10 dBu

                    Nominal Output Level (1 kHz)

                    DI/TUNER OUT: +4 dBu
                    LINE OUT: +4 dBu
                    SUB WOOFER OUT: +4 dBu


                    Woofer: 20cm (8inches) x 2
                    Tweeter: 8cm x 5cm (3inches x 2inches) x 2


                    [GUITAR Channel]
                    PICKUP Switch (PIEZO, MAGNETIC)
                    SHAPE Switch
                    VOLUME Knob
                    BASS Knob
                    MIDDLE Knob
                    TREBLE Knob
                    CHORUS Switch
                    [MIC/LINE Channel]
                    PHANTOM Switch
                    SELECT Switch (MIC, LINE)
                    VOLUME Knob
                    BASS Knob
                    MIDDLE Knob
                    TREBLE Knob
                    CHORUS Switch
                    CHORUS Knob (SPACE, RICH, WIDE)
                    REVERB/DELAY Knob
                    FREQUENCY Knob
                    START Button
                    MUTE Switch
                    MASTER Knob
                    POWER Switch


                    [GUITAR Channel]
                    [MIC/LINE Channel]


                    [GUITAR Channel]
                    Input Jack (1/4-inch phone type)
                    [MIC/LINE Channel]
                    Input Jacks
                    (XLR type, balanced, phantom power : DC 48 V, 10 mA Max)
                    (1/4-inch TRS phone type, balanced)
                    AUX IN Jacks
                    L, R (RCA phono type)
                    L (MONO), R (1/4-inch phone type)
                    DI/TUNER OUT Jack (1/4-inch TRS phone type)
                    LINE OUT Jacks
                    L, R (XLR type)
                    MONO (1/4-inch phone type)
                    SUB WOOFER OUT Jack (1/4-inch phone type)
                    PHONES Jack (Stereo 1/4-inch phone type)
                    FOOT SW Jacks
                    TIP: MUTE, RING: ANTI-FEEDBACK (1/4-inch TRS phone type)
                    TIP: CHORUS, RING: REVERB/DELAY (1/4-inch TRS phone type)

                    Power Consumption

                    30 W


                    Carrying Case
                    Owner’s Manual


                    Foot Switch: BOSS FS-5L (Mute On/Off), BOSS FS-5U, Dual Footswitch: BOSS FS-6, BOSS FS-7

                    SIZE AND WEIGHT


                    464 mm
                    18-5/16 inches


                    303 mm
                    11-15/16 inches


                    326 mm
                    12-7/8 inches


                    13.9 kg
                    30 lbs. 11 oz.

                    PERFECT SOUND

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