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Super ring modulator with lots of other functions.Excellent condition. Supplied with power cable.Please check my listings for combined postage and deals.Ringmod, Sample and Hold, Noise, and Lag GeneratorSCI FI is an ingeniously vintage-circuit-inspired Richard Nicol/Pittsburgh Modular original. As the reader might already know, ring modulation is a signal-processing electronic function: an implementation of amplitude modulation or frequency mixing, performed by multiplying two signals. This beloved other-worldly, warm, and at times clangorous coloring dates at least as far back to Bode's Melochord of 1947, technology which was ultimately licensed to Robert Moog in the early 1960s. Of course analog maestros Don Buchla, and Lord Tom Oberheim made their marks, circuitry culminating, to our eyes, in the brilliantly rhythmic, and wildly expressive Yamaha CS-80 Ringmod circuits and controls.Back at the Modstar Ranch: The SCI FI's outputted ring-modulated signal is the sum and difference of the frequencies present in each waveform—a signal rich in partials—often producing a haunting, bell-like, metallic, and sometimes softly grinding, understated modulation awash in harmonic and non-harmonic tones. S.E. brought its own brand of dynamic ModMax Pedal-flavored Ringmod to the world in 2002.SCI FI is getting better all the time with its companion LFO FREQ (low frequency oscillator), true analog PINK, and digital WHITE noise, S & H—a true sample and hold generator, with RANGE control, and LAG generator—a slew limiter which craftily smooths out changes in audio or modulation signals: higher values = smoother signal flowing. This module is every bit as creamy sounding as it is electrically charged: the higher frequencies coat the sound with a sparkling quality one wouldn't naturally expect, but it is welcome sound for certain.Potentiometer PotentialSix attenuation pots control the CHANNEL 1, CHANNEL 2, CHANNEL 3, CHANNEL 4, CHANNEL 5, and CHANNEL 6, delivering smooth, detailed, and complex expression.Patch it UpSeven patch points: RM X IN, RM Y IN, GATE, SOURCE, RM OUT, WHITE, PINK, and S & H OUT connect inspiration and intuition to voltage direction, and submission.All Controls and Patch PointsRING MOD – Adjusts the ring mod depth.LFO FREQ – Adjusts the rate of the sanple & hold.WHITE – Adjusts the white noise level.PINK – Adjusts the pink noise level.RANGE – Adjusts the sample & hold depth or intensity.LAG – Adjusts the sample and hold lag or slew limiting (glide): in the circuit after the sample & hold and before the range attenuator.RM X IN – Ring Mod X waveform input.RM Y IN – Ring Mod Y waveform input.GATE – External gate input for sample & hold.SOURCE – External audio input for sample & hold.RM OUT – Ring Mod output.WHITE – White noise output.PINK – Pink noise output—the pink noise is normaled to the source input of the sample & hold.S & H OUT – Sample & hold output.