Doepfer

Module A-126-2 is a fully analog frequency shifter for audio signals. A frequency shifter is an audio processing unit that shifts each frequency of the incoming audio signal by the same frequency. If the shifting frequency is e.g. 200Hz an incoming audio frequency of 1000 Hz becomes 1200 Hz, 2000Hz ..

Module A-149-4 generates four triggered random voltages which meet the criteria choosen by several controls.Manual controls for the criteria selection:Octave range (manual control "Oct."): this parameter defines how many octaves are covered by the random voltages (0 ... +5V, with "Oct." control full..

Stereo Multimode FilterModule A-121s is a dual multimode filter which can be used for stereo applications as well as for parallel or serial organized dual mono filters. The core is a 12dB multimode filter identical to the modules A-121-2 and A-121-3. The selection of the filter type is continuously ..

A-126-2 Voltage Controlled Frequency Shifter II - Expansion ModulePlanned expansion module for the A-126-2 Voltage Controlled Frequency Shifter II giving users access to the following outputs (via the seven single pin headers):Envelope FollowerDome Filter 1Dome Filter 2Ring Modulator 1Ring..

Module A-111-5 is a complete monophonic synthesizer module that includes these components (modular version of Dark Energy):VCOmanual tune control (with an internal jumper the range can be set to ~ +/-1 half an octave or ~ +/-2.5 octaves)range switch -1 / 0 / +1 octavefrequency range about 30Hz ..

Quad Attenuator (Slim Line Series)Module A-183-5 is a simple passive quad attenuator. Passive means in this context, that each unit is made of two sockets and a 50k linear potentiometer only. There are no active parts like amplifiers or buffers and no power supply is required.This is how the A-..

Module A-138j is a four channel mixer with an additional polarity/mute switch for each input. In the upper position of the corresponding switch the inverted signal is used. In the center position the input in question is turned off (mute) and in the lower position the "normal" (i.e. non-inverted) si..

Module A-171-4 is a fourfold voltage controlled slew limiter. It's intended purpose is polyphonic portamento but can be used also for other applications where several slew limiters are required. The common slew time can be adjusted manually and in addition controlled by an external control volt..

Module A-101-8 is a 8-stage phase shifter which uses light-sensitive resistors (LDR) and is a replica of the Compact Phasing A manufactured by the company Schulte in the seventies. The actual phasing circuit is identical to the historic model. Only the illumination control of the LDRs is different: ..

Polyphonic voltage controlled mixer / Suboctave generatorModule A-135-5 is a combination of a voltage controlled polyphonic mixer and a polyphonic suboctave generator. It is made of 12 voltage controlled amplifiers (VCAs) which are arranged in form of a 4x3 matrix. Herewith up to three four-voice po..

Doepfer A-105-2 24dB Low Pass (SSI-Type) FilterModule A-105-2 is a voltage controlled low pass filter with 24dB/octave slope. It is the successor of the A-105 which had to be discontinued because the obsolete SSM2044 filter circuit. The A-105-2 is based on the SSI2144 which is in turn the ..