In some ways, this amp is very much like what you'd expect from a Princeton, but in many ways it's not. The preamp section is slightly different from the 60s Princeton it claims to be modelled after: this was an intentional decision to make it a slightly friendlier pedal-platform. I find the amp, when mic'd up in studio, sounds amazing. I find the amp, when mic'd up in live applications, to be a bit dark. I generally have to have the mic more centre-cone than I usually would, and I roll the bass back quite a bit (sometimes off). Curious, but seems to be the trend.
My favourite way to use this amp is cranked up to almost full and play the volume knob. If I'm doing less bluesy, more indie-pop-rock-country stuff, I generally need it to be around 1-2 o'clock. It's a good sweet spot. That said, I see a lot of guys liking to run it around 10 o'clock, but to me, the amp doesn't feel like it's giving you anything at that volume. That's just me.
Nice long Reverb. Good sounding tube tremolo (even the knobs react like an old Princeton).
Took me a long time to figure out the uses of this amp, but now that I have a handle on it, I've come to appreciate it. Most of my problems arise when I'm trying to get it to act like something besides a Princeton...DUH. But they advertise it as a super-versatile, pedal-platform amp. And ya, it's versatile, but after hundreds of gigs and 2+ years of ownership, I'm only now settling in on it's best use: being a Princeton.