When using an octave pedal I split my signal path at the pre-amp output stage, so that I can eq the sub octave separately from the dry signal. In order to get more sustain from the octave pedal output, I thought it might help to compress and boost the signal going into it. I think I'll need a very "squashy" compressor rather than a transparent one, so was considering a CS-3. But then I read on Ovni-Lab that this particular pedal is characteristically weak in the Lows. I'm wondering whether this is going to matter in the context in which I'm thinking of using it? I'd welcome your views, or any other suggestions about how to acheive greater sustain for the sub octave output. I use a Markbass octave pedal. Thanks...