Dr Scientist Dusk Digitally Controlled Analog Filter

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Dusk is a digitally controlled analog filter. At its heart is an analog 24dB/Octave low pass filter based around an old-school integrated circuit called an Operational Transconductance Amplifier or OTA. The OTA runs off of split +/-9V rails for great audio quality and a deep filter sound. The digital side brings a whole bunch of convenient and powerful features like controlling the filter setting, tap tempo, MIDI, 6 LFOs, and a platform for all the best filter modes in one small pedal.


Features



  • 3 Filter Modes, 6 LFO Waveforms in a small form factor

  • High quality analog signal path

  • Premium parts and components throughout

  • True Bypass with soft touch relay switching

  • MIDI implementation of all digital controls

  • Expression pedal/CV control over Filter Cutoff

  • Top mounted audio and power jacks

  • Designed and handmade in B.C., Canada


Knobs



  • FILTER – Mode dependent. Controls Filter Cutoff or Filter Range.

  • RESONANCE – Analog feedback control adds resonance to filter.

  • VOLUME – Analog volume control.

  • MODE – Select 1 of 3 operating modes (Cutoff, Envelope, LFO).

  • WAVEFORM – Select 1 of 6 waveforms for LFO Mode.

  • MULTI – Mode dependent. Automated Filter Sweep, Envelope Freeze, LFO Speed Ramping.

  • BYPASS – Engage or disengage the effect

  • Gallery



Operation



  • Input/Output Impedance: 500kΩ/1kΩ

  • 150mA @ 9VDC, 2.1mm centre negative plug

  • True Bypass with soft touch relay switching

  • Additional Specs

  • Mono input, Mono output, TRS Expression input/TS Control Voltage input

  • Filter Control: +/-24dB analog, resonant low pass filter

  • Exp Input: TRS cable, any resistance

  • All analog signal path

  • Dimensions: 70mm wide, 129mm long, 59mm tall (2.75” wide, 5.1” long, 2.3” tall)