EHX's simple and effective compressor. It's a bit more natural and open than the Boss option. 

Model: Electro-Harmonix Soul Preacher Compressor/Sustainer
Made: USA, recent model
Serial: obscured/missing
Type: compressor
Power Input: standard 9v DC centre-negative (supply not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)