Got this b/c I found out that they have the Orig JRC 4558 Op Amp Chip and have the orig TS-9 (80's models) circuit path/components! New TS-9 reissues DO NOT!! I think it sounds alittle flatter than my Biyang OD-8 (TS808 clone) but WAY tighter and I only use it for boosting my Hi Gain tones. Some complain the switch is cheap but the pedal is cheap and replaceable. Has a metal chasis too. I love mine!!