I've been searching literally for a decade for an actually transparent overdrive, from the Timmy, King of Tone, Nobels ODR-1, OCD, you name it, but THIS is transparent, no narrowing of the freq. response, no nasal sounds, no coloration, just overdrive, I've actually tried leaving it on all the time with my 5-string bass and it just works, which is ridiculous for 20€.
One day I'm getting me a full blown JHS Morning Glory, but until then, Dealbreaker for the win!