via this auction

In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
2 independent filters per voice
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)
2 LFOs with standard waveforms and wave tracking, sync with MIDI
2 ADSR Envelopes with switchable lin/exp characteristics and trigger modes
4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings