The MK401 keyboard has 61 touch-sensitive keys, a backlit LCD display, and a polyphony of 64. It features 600+ voices, 200 styles, and 200 preset songs with a music tutorial system. The keyboard also has an XY-pad that can control LPF, HPF, resonance, reverb, delay, and sidechain effects. The sampler function allows you to record a sample and transpose it over the keyboard. The MK401 has various connectivity options, including USB-MIDI/USB audio, headphone/output jack, input jack, microphone jack, pedal sustain jack, and SD card slot. It has 2 x 15-watt amplifier and 2 x 12 cm speakers. The keyboard can be powered by DC power or 6 AA batteries and weighs 5.1 kg.