Dual VCA
http://www.metasonix.com/index.php/r-57-dual-vca-preamp
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RARE METASONIX R-57 DUAL VCA/PREAMP – DISCONTINUED & HARD TO FIND! Own an original Tube Cult Classic – Before It Disappears Forever! Up for grabs is the legendary Metasonix R-57 Dual VCA/Preamp – a beast of a module that’s now OFFICIALLY DISCONTINUED and no longer in production. These units are ULTRA RARE and are becoming hard to find. This is your golden opportunity to snag a piece of sonic history.Known for its wild, unpredictable character and unmistakably aggressive tone, the R-57 isn’t just a VCA/preamp – it’s a built for the brave. If you know Metasonix, you already know this is gear with attitude.Perfect for collectors, modular maniacs, and sound designers!Comes in the original box.Includes ribbon cable, screws, and A4 manual.Mounted with nylon washes, ZERO rack rash – Smoke free Studio - (Very Light Usage)Shipped FREE via 24-hour tracked Royal Mail, sealed with anti-tamper tape for security and peace of mind!What it does: The R-57 is a dual high-gain amplifier made with triode-pentodes. It is arranged so the screen grids of the pentodes can be effected with a control voltage, allowing each channel to be used as a conventional VCA, or as a voltage-variable distortion device. Additionally, channel 2 has an INVERT switch for its CV input, causing its gain to vary inversely from normal. By wiring the same signal to both inputs and the same CV to both CV inputs, the R-57 can then be used as a voltage-controlled stereo panner. Plus, each channel has enough gain to allow its use as a preamp, with up to 50+ dB of gain available. Audio and CV inputs have 100k ohm impedance. The audio output is able to drive a 600-ohm load. The CV inputs may be anywhere in the -15v to +15v range, the effective range is -2v to +15v (variable by setting the CV TRIM control).
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