Ketron X1, like many other synthesizers, has a 64-note polyphony and 61 weighted keys with aftertouch. On the left part of the keyboard there are pitch/mod wheels. At the top of the instrument you can find quite an extensive control set, including a graphic TFC-display with backlight and dimensions of 240x128. On the screen you can see the main information (name, instrument, faders, etc.)
X1 has a wide range of sounds: PCM-samples, 276 sounds, 20 drum kits, 231 percussions, drum grooves, analog waves (sawtooth, square, sine). Moreover, the synthesizer has 128 programmable user voices with envelope control, LFO, wheels, aftertouch and effects. X1 also has 198 kinds of auto accompaniment and 198 custom styles with programmable parameter settings.
The synthesizer boasts a variety of effects, ranging from reverb/delay and ending with a distortion/wah-wah. The sampler allows you to store up to 8 MB of 16 bits/44.100 kHz data. There you can edit time, loops, reverse and delete. The rear panel of X1 features inputs for stereo headphones, 2 line inputs, a microphone input, MIDI input/output/thru, 2 outputs, and connectors for sustain and volume pedals.