BOSS Compression Sustainer CS-1

The BOSS CS-1 (Compression Sustainer) is BOSS's first compressor, released in 1978. Featuring a photocoupler, it's known for its intense, thick vintage sound with a distinctive pako-pako character. With a NORMAL/TREBLE mode switch, it's a legendary unit particularly effective for creating sharp, defined tones during cutting.

I purchased this used but am selling it to streamline my equipment.
The original box is not included, so it will be shipped securely packaged.