Strato and Brown channels are unbelievable, absolutely wonderful liquid gain at 12 to 3 o' clock settings. Any more gain than that and the background noise comes up and the notes, while still retaining more definition than they would on a lesser preamp, start to buzz out a little. Brown is very British sounding. I've seen pictures of idiots with every knob on their Fish turned all the way up . . . I think this preamp sounds the best with the controls sent right around high noon.
Mid control is extremely powerful and allows for lot of control of the voicing of the tone.
You can play major thirds with these two channels and they sound good, clear and very articulate. The Shark channel was a big disappointment. Not sure what Bogner was trying to do here . . . I've tried every combination of preamp and power amp settings with no luck. It sounds like a muddy, heavily distorted Marshall, almost like a JCM 900 in need of a tube change.