Happy New Pedal Day for me! w00t.
Before agreeing to a trade for this pedal, I consulted The Oracle at Phillipi. They told me to read Bongo's site and that they knew nothing about compressor pedals. So, I did.
http://www.ovnilab.com/reviews/guyst2.shtml
Interesting. B seems to give this pedal a good review, so I took the risk on it. Good riddance Fender Blender, hello first compressor pedal.
I have had a few hours of playing with it and thus far, it has proven to be a positive experience. B's comment about the lows:
The highs are bright and clear, but the lows are cut off a bit. I'd say much like the Keeley and the modded CS3, the lows are perfectly sufficient for a 4-string bass, noting that the lows sound "tight" rather than "fat".
I kept turning the pedal off and on and the removed lows effect this pedal is having on my Gretsch and U-Bass is very much like my use a high-pass filter to remove some of the rumble and tighten up the lows.
Thus far, my experiments have been bass-pedal-amp and bass-pedal-direct (head phones). I will be trying the Fdeck HPF-Pre in front of it future experiments.
As for the whole sustain or clean-boost thing, I experienced as B wrote with the sustain knob taken above 12:00. I was getting improves sustain time on the U-Bass, which has the sustain of Behndy's attention span. And my Gretsch seemed to want to oscillate for days.
Thanks to B's work, my first practice experience with compressors is going well. Thank you Bongo for the hard work. And thank you 'Fabe for the trade.