Novation, along with KS4, released a synthesizer with an extended keyboard - Novation KS5. Compared to its "brother", its semi-weighted keyboard included 5 octaves (61 keys), and got aftertouch. Anyway, KS5 took everything else from K-Station.
The instrument includes 8 voices of analog modeling sounds with FM, vocoder, arpeggiator, reverb, delay and 400 user programs. K-Station has 3 oscillators generating sawtooth, triangular, sine, and triangular with PWM waveforms.
The nit even has a basic FM for the synthesis of more "aggressive" timbres. All oscillator settings can be altered owing to unison, hard sync, or addition of some noise to standard waves.
K-Station has a built-in low-pass resonant filter with switchable modes of 12/24 dB, and envelopes: attack, decay, sustain, release (ADSR). Additional envelopes interact with the oscillators, and with LFO. Among the built-in effects you can find reverb, delay, chorus, phaser, flanger.
Their sends can be controlled with the modulation wheel. The 12-band vocoder is included into the effects section, it is responsible for processing external mono sounds, such as a cappella and drum loops. External sounds can also be used as a generating source, pass through filters, envelopes, etc.
In addition to the above mentioned effects, the synthesizer has a built-in arpeggiator. Most notably, K-Station has a compact keyboard that is very pleasant for playing basses, leads, pads, and many more. The synthesizer was used by the famous duo, creating in the genre of psy trance - Infected Mushroom.