(R-30) Compressor w/Gray Case & Sustain/Output Designation (USA) w/Original Plastic Battery Holder

Effect Information

Apparently there were two versions of the USA made Ross Compressor. One [perhaps] early version with the designation of  “Sustain and Output” and the [perhaps] later version labeled with “Sustain and Level.”

“It provides extremely smooth and creamy sustain and accompanies well with overdrive pedals. Pedal is fairly simple to
use by adjusting the two knobs (sustain and level).”

More information here.

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