DR. SCIENTIST Dusk Dr. Scientist

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

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)