When Novation released the KS4 and KS5 in the early 2000s, they took the proven formula of their K-Station and pushed it significantly further, creating a synth that felt like a bridge between budget-friendly and serious production tools. The KS4 arrived with 16-voice polyphony and a synthesis engine evolved from their award-winning Nova and Supernova II, making it capable of far more sonic depth than its price tag suggested.
The heart of the KS4 is its three detunable oscillators, each offering sawtooth, square, triangle, sine, variable pulse, and double waveforms plus 17 additional sample-based waveforms that include piano envelopes, stepped pitch sequences, and rhythmic patterns perfect for percussive or metallic tones. You can sync oscillators together, apply FM synthesis between them, or route external audio through the oscillator section entirely. The multimode filter handles low-pass, high-pass, and bandpass modes with switchable 12 or 24dB slopes, while two LFOs with sample-and-hold and multiple waveform options give you serious modulation possibilities. The mixer section includes dynamic level modulation, letting you blend oscillator outputs in real time for evolving textures.
What really sets the KS4 apart is its four-part multitimbral mode, where each part gets its own complete effects chain—a feature Novation carried over from their higher-end gear. You're working with six simultaneous effects per part including reverb, distortion, tempo-locked chorus and phaser, delay, stereo panning, and a 12-band vocoder for processing external audio or drum loops. The 49-key semi-weighted keyboard includes velocity and aftertouch, and all 29 knobs and sliders transmit MIDI. Four independent arpeggiators with 32 preset patterns round out the feature set, along with 200 user programs and 50 user performances to store your work.
The KS4 has aged well in the used market, with players appreciating its warm filter character, the surprising depth of its digital waveforms, and how much control you get over the sound-shaping process.
