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 custom 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 external footswitches
Flexible I/O with XLR mic input, stereo XLR and ¼-inch 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

SPECIFICATIONS
Rated Power Output320 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
STEREO LINK (IN): 0 dBuNominal Output Level (1 kHz)LINE OUT (L/MONO, R): +4 dBu
LINE OUT (BALANCED L, R): +4 dBu
STEREO LINK (OUT): 0 dBuSpeakers30 cm (12 inches) Woofer x 2
Horn Tweeter x 2ControlsPOWER 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

[EFFECT]
EFFECT knob
ROTARY SPEED button

[AUX IN]
LEVEL knob
MUTE SPEAKER button
MUTE LINE OUT button

[EQUALIZER]
LOW knob
MIDDLE knob
HIGH knob

[PHONES]
VOLUME knob

MASTER knobIndicatorPowerConnectorsCH1 (BALANCED) jack: XLR type
CH1 (L/MONO, R) jacks: 1/4-inch phone type
CH2 (L/MONO, R) jacks: 1/4-inch phone type
CH3 (L/MONO, R) jacks: 1/4-inch phone type
CH4 (L/MONO, R) jacks: 1/4-inch phone type

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

STEREO LINK (IN, OUT L, OUT R) jacks: 1/4-inch phone type
LINE OUT (L/MONO, R) jacks: 1/4-inch phone type
LINE OUT (BALANCED L, R) jacks: XLR type
FOOT SW jack: 1/4-inch TRS phone typePower Consumption98 WAccessoriesOwner's Manual
Caster x 4SIZE AND WEIGHTWidth759 mm
29-15/16 inchesDepth470 mm
18-9/16 inchesHeight (including casters)585 mm
23-1/16 inchesHeight (excluding casters)534 mm
21-1/16 inches