Tetra Specifications
- Multitimbral four-voice analog synthesizer
- 100% analog signal path
- Two oscillators per voice (sawtooth, triangle, saw/triangle, square with variable pulse width) with hard sync
- White noise generator
- One classic Curtis low-pass filter (switchable 2- or 4-pole) per voice, self-oscillating in 4-pole mode
- Analog VCAs
- Three envelope generators (ADSR plus delay) per voice
- Four LFOs per voice
- Two sub-octave generators (one octave down and two octaves down) per voice
- Feedback loop per voice with programmable level and gain
- Four assignable performance controls per program
- Gated 16 x 4 step sequencer (one sequence per program)
- Arpeggiator
- Fully programmable (free downloadable software editor for Mac OS and Windows)
- 512 programs organized into four banks of 128; 128 combos
In/Out
- I/O: USB 2.0 (type B receptacle)
- MIDI In, MIDI Out/Thru, Poly Chain Out
- Audio Outs 1/Left, 2/Right, 3, and 4 (1/4″ unbalanced), 1/4″
- Headphone out