I just picked this up. You can find them for around $50 used. They are designed with low range instruments in mind - bass, baritone guitars, and down-tuned guitars. I was very impressed by the 3 band parametric EQ, which can either cut or boost. And of course, I was impressed by Andy
So, it is frequently boasted in sales pitches how responsive a particular distortion/OD/gain pedal is to a guitar's volume knob - "It cleans right up when you roll back the volume!!" But IMO, this is not always a good thing. Sometimes the darn volume is set too high on the pedal and I want to...
The gain structure/tone/breakup point/distortion level (or any other term you choose to use) of an OD, distortion or fuzz type pedal certainly changes when you add compression.
This may be obvious to some and not others. Myself, I always assumed this in theory but finally put it to the test...
Buying the best distortion pedal is your quest for perfection in your tone. The sound that opens up your playing to shine. And that’s it.
http://distortionpedalhq.com/13-best-distortion-pedals-shred/