Dusk by Dr. Scientist Sounds

Dusk is a digitally controlled analog filter. At its heart is an analog 12dB/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)