JHS SD-1 Pro-Rhythm Drum Synth Tremolo (Phaser would be a PS-1A

(Phaser would be a PS-1A and the fuzz was a Big Muff)

Runs off a standard 9v battery (supplied)

The tremolo section has two modes

(Please note: it is always possible with vintage equipment that some crackly pots/sliders may develop over time when equipment has not been used - even during a short delivery period - this can usually be easily rectified either by use or with a bit of switch-cleaning spray)

Demo of this actual unit in action:

JHS SD-1 Pro-Rhythm Drum Synth Tremolo (Phaser would be a PS-1AExcellent drum synth. Full of disco and dub goodness. Only selling this one because we picked up another. Serviced and working well. The JHS SD 1 is a 2 oscillator synth with a switchable LP HP BP resonant VCF. VCO 1 has Noise, Square and Ring Mod. VCO 2 is switchable as an LFO which can affect VCO 1 or the VCF. It also has a sweep generator which can affect either or one of the VCOs, and the VCF with independent variable polarity and depth, and