I know, it's another compression thread. Sorry guys.

But I'm in a bit of a dilemma.
Im a long time lurker, first time poster and have recently bought a BBE Opto-Stomp to clean up/even out my tone based on the glowing reviews many of you guys have given it.
The thing is, i really can't hear the difference between my clean tone and when I have the opto on. Yeah i know that its a transparent unit, and that compression doesnt really have an effect on tone, but i can honestly not hear how it makes any difference, in either a band or solo situation, apart from a slight volume drop when i crank the compression up full.
Using a Corvette Standard (active) into an Orange Crush 35W. Have also tried it with a 100w behringer combo (i know) and an old Laney head+cabs.
Thanks