Sequential Pro3 KeyboardThe 3-octave synthesizer with velocity and aftertouch semi-weighted keyboard is referred to as a hybrid because it combines two analog oscillators, a wavetable oscillator, three classic filters, and a monophonic, 3-voice paraphonic architecture. With over 60 knobs and 70 buttons, the instrument is a breeze to program without intensive menu diving.Three vintage-style filters cover the gamut of sonic textures. Filter 1 is a low-pass based on the Prophet 6, while filter 2 sports a classic low-pass ladder filter design with resonance compensation. Filter 3 is a classic state-variable OB-6 multimode that can be continuously varied between notch, low-pass, and high-pass with an optional band-pass mode. An additional drive control provides punch when you need that bit of extra mojo.