Boss CS-3 Compressor Sustainer

In great condition, works perfectly. 

As one of the longest running Boss pedals, the CS-3 Compression Sustainer remains a staple on thousands of pedalboards, providing all the crunch and squish you could ask for with typical Boss reliability and none of the noise associated with older compressors. If you're just getting into the compression game, there's no better place to start than the Boss CS-3 Compression pedal.