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Dave Smith Instruments DSM03

Item: SYN0005645-000
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The Dave Smith Instruments DSM03 Feedback Module is a tunable feedback module with various adjustable parameters. A newly de...  All product info

€ 299.00
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Dave Smith Instruments DSM03

feedback module

The Dave Smith Instruments DSM03 Feedback Module is a tunable feedback module with various adjustable parameters. A newly developed lowpass filter with resonance allows even more possibilities for signal post-processing. For Karplus-Strong synthesis effects a triggerable noise with attack/decay envelope is on board.

Karplus-Strong synthesis

The feedback circuit is an offshoot of DSI´s Evolver, Pro 2 and Prophet 12. The tunable feedback picks up the audio output and sends this signal back into the filter and then into a delay, making Karplus-Strong effects child's play.

Newly developed lowpass filter design

The new digital filter is based partly on filters of the past, but was not designed to duplicate the specific sound of an existing filter, but should also provide a good-sounding stand-alone filter in addition to the feedback context. It works with oversampling and contains numerous optimizations in the signal path, which can enhance each signal musically. To ensure the best possible resolution of the audio signal, the digital filter operates in 24-bit/96kHz.

Numerous parameters controllable via CV

Individual control via CV of feedback amount, tuning, low-pass filter frequency and filter resonance. The module provides an audio input and an audio output, as well as a trigger input for the noise source.


  • Feedback Amount CV: -5V to +5V
  • Tuning CV: -5V to +5V
  • LPF Freq CV: -10V to +10V
  • Resonance CV: -5V to +5V
  • Audio In: -2.5V to +2.5V
  • Audio Out: -2.5V to +2.5V
  • Audio Trigger In: 0 to +10V


  • Power supply (5V or 12V operation adjustable by jumper)
  • Power consumption combined 12V with additional 5V: +5V = 200 mA (+12V/-12V) (10mA/20mA)
  • Power consumption with only 12V: (+12V/-12V) (210mA/20mA)


  • Width: 10TE
  • Depth: 39
  • including screws and Doepfer Style ribbon cable for power supply


  • Manufacturer: Dave Smith Instruments
  • TE / HP: 10
  • Type of Modul: FX
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