מגבר קלידים Roland KC-990   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