Roland KC-990 Keyboard Amplifier

The king of the Roland KC keyboard amps, the KC-990 brings your sound to life in full-range stereo with two 12" woofers, two tweeters and 320 watts of power.

The flagship KC-990 is a performance powerhouse filled with high-end features. Offering four onboard DSP effects, four stereo input channels, a stereo aux input, and support for an XLR vocal mic, it's a great all-in-one solution for players with large keyboard setups and small groups performing with electronic instruments and backing tracks. The KC-990 delivers big, full sound for both stage monitoring and PA use, thanks to its stereo speaker configuration and 320 watts of total power. And with Stereo Link capability, you can seamlessly add a second KC-990 when you need more inputs and broader sound coverage.

Roland KC Amp History

For over two decades, keyboard players everywhere have relied on Roland's KC amps for their powerful high-fidelity sound, onboard mixing features, versatile connectivity, and lasting durability. The latest generation carries on the time-honored KC benchmark of quality while offering new enhancements tuned for the needs of today’s working musicians. With a KC amp by your side, you;re in complete control of your stage rig, so you'll always sound great and play your best. And that’s worth it every time.


- Flagship stereo keyboard amplifier with 320 watts of power
- Onboard mixer with four stereo input channels, stereo auxiliary input, and master EQ
- Two newly developed 12-inch woofers and two custom horn tweeters
- Built-in effects: reverb, chorus, tremolo, and rotary
- Control rotary speed and effects on/off with optional read more external footswitches
- Flexible I/O with XLR mic input, stereo XLR and 1/4" line outputs, headphones output, and more
- Stereo Link function for chaining two KC-990s
- Metal jacks for increased durability
- Casters and side-mounted handles for enhanced mobility

Full-Range Stereo Sound for High-Impact Performances

The KC-990 offers full-range stereo sound reproduction with 320 watts of power (180 watts x 2), two newly designed 12" speakers, and two custom horn tweeters. The cabinet features Roland’s patented twin bass-reflex design, which delivers extended low-frequency response without distortion. This allows the KC-990 to accurately reproduce the wide frequency range of 88-note stage pianos, organs, and synthesizers, as well as rhythm machines and other electronic instruments.

Onboard Mixing for Big Rigs and Full Groups

Roland's most powerful KC amp is a complete stereo sound system in a single package, making it ideal for backline amplification, stage monitoring, and even main PA use. With four stereo line input channels available, you can connect keyboards, percussion pads, drum machines, and more. There’s also a dedicated auxiliary input to plug in a smartphone or music player for backing tracks. Channel 1 includes an XLR input too, allowing you to connect a vocal mic for even more versatility. The Aux In channel supports 1/8", RCA, and 1/4" connections, and features a handy monitor function for working with guide tracks on stage.

Built-In Stereo Effects

The KC-900 comes equipped with four different effects for sweetening your live sound. The chorus effect is derived from Roland's world-famous JC-series amps, providing unmatched depth and dimension through the KC-990’s stereo speakers. The amp also includes tremolo and rotary effects that work great with organs and electric pianos, plus a lush stereo reverb for vocals and instruments. By connecting optional footswitches, you can turn the effects on/off and control rotary speed hands-free while performing.

Versatile Connectivity for Performing, Recording, and Practice

With its rear-panel connectivity, the KC-990 integrates easily into any playing environment. Stereo line outputs are provided on both XLR and 1/4" inch jacks, offering simultaneous connections for interfacing with PA systems, stage monitors, and recording devices.
WARNING: Cancer and Reproductive Harm -
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- Rated Power Output: 320 W (160 W + 160 W)

Nominal Input Level (1 kHz):
- CH1 (BALANCED, L/MONO, R): -50 - -20 dBu
- CH2 (L/MONO, R): -20 dBu
- CH3 (L/MONO, R): -20 dBu
- CH4 (L/MONO, R): -20 dBu
- AUX IN/MONITOR IN (AUX 1, AUX 2, AUX 3): -10 dBu

Nominal Output Level (1 kHz):
- LINE OUT (L/MONO, R): +4 dBu

- Full Range: 30 cm (12 inches) x 2
- Horn Tweeter: x 2

- Controls: POWER switch, GND LIFT switch

- [CH1]: MIC/LINE knob, EFFECT button
- [CH2]: LINE knob, EFFECT button
- [CH3]: LINE knob, EFFECT button
- [CH4]: LINE knob, EFFECT button

- LEVEL knob
- MUTE LINE OUT button

- LOW knob
- MIDDLE knob
- HIGH knob

- [PHONES]: VOLUME knob, MASTER knob
- Indicator: Power

- CH1 (BALANCED) jack: XLR type
- CH1 (L/MONO, R) jacks: 1/4" phone type
- CH2 (L/MONO, R) jacks: 1/4" phone type
- CH3 (L/MONO, R) jacks: 1/4" phone type
- CH4 (L/MONO, R) jacks: 1/4" phone type

- AUX 1 (L/MONO, R) jacks: 1/4" phone type
- AUX 2 (L, R) jacks: RCA phono type
- AUX 3 (STEREO) jacks: Stereo miniature phone type
- PHONES jack: Stereo 1/4" TRS phone type (mono signal output)

- STEREO LINK (IN, OUT L, OUT R) jacks: 1/4" phone type
- LINE OUT (L/MONO, R) jacks: 1/4" phone type
- LINE OUT (BALANCED L, R) jacks: XLR type
- FOOT SW jack: 1/4" TRS phone type

- Power Consumption: 98 W

- 29-15/16" (W) x 18-9/16" (D) x 23-1/16" (H)
- Weight: 42 kg, 92 lbs 10 oz
- Accessory: Owner's Manual, Caster x 4
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 107.25 lbs
Shipping Dimensions: 32 x 25 x 21 in
Manufacturer Part Number (MPN): KC-990

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 5 out of 5 stars. (2 ratings)
Submitted September 23, 2021 by a customer from

"This amp rules over all other keyboard amps"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
After doing an extended amount of research and testing amps at my local music stores. I came across this one and it’s the flagship of all flagships. The effects are clear and very functional. The tweeters deliver ear piercing highs and the subs deliver beautiful mids and house rattling Lows. No loud overtones and at very high volumes no distortion whatsoever. I’ve only had mine turned up to 80% so don’t know exactly where the cut off is it as far as no distortion but that was way too loud for me. I played through it at our church running my keyboard through it and I’ve only played it at the church at 35% and it’s more than enough and our church is quite large can seat 100 plus. Also with the band I’m in every time I put low in frequencies through it the bass player gives me this look of yeah that amp rocks dude. You will not be disappointed so if you’ve been thinking about it do it.
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