The Professional Solution - The Ultimate Tube Synthesizer.

Extended information

Main CV input controls pitch of both VCOs (Hz/V response). Gate input triggers envelope generators, accepts 0-5v or 0-10v gate voltage. 6AL7 "eye" tube displays status of LFOs and A(S)R control voltages on three separate glowing green bar graphs.

Miniature joystick performs multiple jobs: vertical motion affects pitch of both VCOs, horizontal motion affects tuning of filter. Press joystick in to trigger envelopes.

Features
Size: 6U high standard EIA rack mount, 3" depth below rack panel. 11 vacuum/gas tubes. Weight about 20 pounds with AC adapter. Draws 12 volts (AC ONLY) at 3 amps.

Technical specifications

Pitch sources:
* 2 independent VCOs
* Made entirely of vacuum and gas-filled tubes
* Range >2 octaves using CV, octave switching allows range from 33 Hz (low C) to more than 2 kHz.
* 3 waveforms: thyratron sawtooth, square, and square with suboctave
* VCO2 may free-run or be soft-synced to VCO 1
* Numerous patch points allow enormous flexibility

Waveshaper:
* Unique circuit with soft clipper and pulse adder (shapes waveforms from VCOs by adding small pulses to top of waveform at discontinuity)
* Made entirely of vacuum tubes
* Settings: disable, soft-clip only, and soft-clip with pulses added to signal. Latter circuit allows simulation of noise source.

Filter:
* Unique multimode circuit allows it to be used as a lowpass, treble/midrange bandpass or bass bandpass filter.
* Continuously variable control allows mixing of filter forms in any proportion.
* Made entirely of vacuum tubes.
* Range of treble resonance switchable, 400-1700 Hz. Bass resonance tunes from ~100-350 Hz

VCA:
* Unique circuit using a pentode tube
* Made entirely of a vacuum tube
* May be modulated with the AR generator only, or with the control voltage generated on modulation bus 2

Modulation:
* 2 envelope generators, A(S)R and AD, both triggered with input gate signal. Both may be combined on either modulation bus to create ADSR.
* 2 independent LFOs, triangle waveform, range <0.3 Hz to more than 5 Hz.
* 2 modulation buses allow combining the A(S)R, AD, and two LFOs as needed to affect any CV input in the audio circuit (VCO pitch, VCO squarer waveshape, waveshaper pulser, filter tuning).