is this an overdrive or distortion pedal?

if this is pre amp pedal,this pedal should go to effect loops right?
that's where it works best IMO, on the fx loop bypassing your amps own preamp. It's an actual preamp, with preamp tube overdrive. AFAIK, it does not use any clipping diodes.
"The fool doth think he is wise, but the wiseman knows himself to be a fool." - W.S.
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