Spectral Audio Neptune

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"Spectral Audio Neptune Analog Mono Synth & MIDI-CV converter
The Neptune is an all-analog mono synthesizer with plenty of features to keep the sonic explorer happy. Real knobs and switches make it a joy to work with live, and the inclusion of the built-in MIDI to CV converter means it can be used to interface modern MID gear to older analog equipment. The Neptune also includes an audio input for processing external signals (guitar, vocals, drum machines, etc.) through the Neputne's sound- shaping circuitry. This particular unit is gold-faced, and in like-new condition. Here is the conclusion from Sound On Sound magazine's review of the Neptune:

"The continuing popularity of analogue synths is founded on two main features: their sounds, and the immediacy with which those sounds can be created and tweaked. Spectral Audio's Neptune achieves pretty well in both respects. Sound-wise, it's a reasonably versatile monosynth with a few unusual features, which make it particularly suited to the production of weird noises. And although there are no patch memories, and the controls don't transmit MIDI data to be recorded in a sequencer, it's a breeze to use, what with every parameter having a dedicated (and clearly labelled!) knob, switch or button. Those seeking to add a bit of genuine analogue sparkle to their studios will not regret putting the Neptune on their auditioning list." (read the entire Sound on Sound review here)

Performance Features
Oscillators:
* 3 very stable VCOs; 1 & 2 offer Sawtooth and Pulse Waves
* 4 Octave Range Switch for VCO2
* Ring Modulation and Sync Features for VCO 1 & 2
* VCO 3 can be switched between LFO and Sub Oscillator Modes
* White Noise Generator
* Slide Function, switchable by MIDI Controller 65 (Portamento)
* External Signal Input

LFO:
* 5 Shapes; VCO 2 can also be a Modulation Source
* LFO MIDI Clock Sync
* 4 Modulation targets: VCO 1 and 2, Cutoff and Mixer

Filter:
* 24 dB MOOG Style, Self-resonant Filter with Highpass and Lowpass Modes

Envelopes:
* Dedicated ADSR Envelope for the Filter with Positive or Negative Modulation
* Second ADSR Envelope for VCA Volume

Effects:
* Distortion and ‘Fuzzer’ Effect

MIDI:
* 5 Octave Range MIDI-CV Converter
* MIDI controlled Cutoff and Modulation
* Velocity Sensitive
* CV and Gate In/Output (switchable)

General:
* Pure Analogue Technology
* 2 Unit Rackmount Enclosure
* Violet, Silver or Gold coloured Front Panel

Spectral Audio (click on the Neptune link to get to the audio demos)."