Rumpelrausch Tšips, who allowed us to port this instrument to BeOS / Zeta.
ZR-3 is an emulation of a drawbar organ providing two keyboards and a pedal section. It's not a close tonewheel emulation, but you can choose between different basic waveforms in addition to the "clean" sound of pure sine waves.
ZR-3 features the basic drawbar control, click emulation, sustain, percussion and pitch bend. The effects include vibrato, a versatile distortion / overdrive section ("Mr. Valve") and rotating speakers emulation.
ZR-3 can be played through separate midi channels or in keyboard split mode.