A really well constructed and great sounding pedal. I'm not going to say that the compression is smooth and transparent, but rather that it has the ABILITY to be smooth and transparent, which incidentally is how I have my own set. If you want extreme compression that you can really hear biting down on a signal, you can easily dial that in.
The biggest revelation for me has been in the studio. The pedal takes cues from the Urei 1176. Whilst in the studio recently, I tracked my vocalist through this pedal to and it did an incredible job: comparing very favourably with my Purple Audio MC77 (an 1176 clone that I have in the studio).