Chuck Levin's is an authorized dealer of Dave Smith Instruments

Chuck Levin's is an authorized dealer of Dave Smith Instruments

Dave Smith INSTRUMENTS Tetra Analog Synthesizer

    Dave Smith Instruments Tetra takes the award-winning sound and features of Mopho, multiplies them by four, and packs them in a box less than half an inch larger!

    Dave Smith InstrumentsTetra has multiple personalities. It is a four-voice, analog poly synth, a sort of “mini Prophet.” It’s a four-part, multitimbral synth with separate outputs, essentially four Mophos in one verycompact box. And it’s a voice expander for other Tetras or the Prophet ’08.

    Physically, Dave Smith Instruments Tetra is similar to Mopho, with four assignable parameter controls per program and a row of controls dedicated to the most commonly used performance parameters. All of the parameters can be accessed from the front panel and Dave Smith Instruments Tetra is fully programmable. A free, downloadable editor is available for Mac OS and Windows to facilitate more comprehensive tweaking.

    Most of the rotary controls are detented encoders, but Cutoff and Resonance are potentiometers, allowing full sweeps with a single turn. The Push It button is a manual trigger to play notes and latch sequences on without the need for a MIDI controller.

    Audio is output in mono, stereo, or per voice, via the four audio output jacks. There is also a headphone out. MIDI communication is by standard MIDI in and out jacks or USB. Poly Chain Out is a special, dedicated MIDI output to chain multiple instruments for increased polyphony.

    The voice architecture is based on the Prophet ’08, but with the addition of a sub-octave generator for each oscillator and a fully programmable feedback loop for each voice. That breaks down to two DCOs, a resonant low-pass filter, three DADSR envelope generators, four LFOS, deep modulation routing, an arpeggiator, and a 16 x 4 analog-style step sequencer per voice. Feedback is capable of producing effects ranging from mild distortion to fairly extreme harmonic instability. (That’s a good thing.) The possibilities are nearly endless. And the audio signal path is 100% analog.