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Doepfer A-133 Dual Voltage Controlled Polarizer

A-133 is a special dual voltage controlled amplifier that enables both positive and negative amplifications. Negative amplification means in this context that the signal is inverted. The main application of the module is the processing of control voltagese.g. ADSR or LFO but the module can be used also for audio applications (e.g. as a waveshaper, see patch examples below).

The amplification range is about  -2.5....0....+2.5 (other amplification ranges for small additional charges, e.g. -1...+1 or -5...+5). Amplification can be adjusted manually (Man control) and by an external control voltage with attenuator (CV). The present amplification is displayed with two LEDs: one for positive and one for negative amplifications (not a signal display but amplification diplay, similar to A-134).
Another module with polarizing function is the Polarizing Mixer A-138c.

For more detailed information please look at the English user's manual A133_man.pdf


Breite/Width: 8TE / 8HP / 40.3 mm
Tiefe/Depth: 50 mm (gemessen ab Frontplatten-Rückseite / measured from the rear side of the front panel)


Please Note
We ship globally with the fastest possible way. For cities of Europe is usually 24 hours dleivery if you order till 15:00 Athens Time. For customers that are out form the city we ship with Greek post registered 4-5 days for delivery. For Rest of the World we ship with Fedex 10-12 days . If you have any issues we are happy to assist you. Synthesizer GR Team