The approach that H&K have taken to the design of the amp and the compromises they have made for the lunchbox format work really well for me. I had been considering options for an upgrade to my current amp for a while. Wanted something that would work well with my overall set up and be useful for both stage and studio work. I play ST type guitars for the most part, have used H&K amps in the past but, like others, have tended to find them on bright side and better suited to LP derivatives. That said I have always liked the format and the build quality. I read reviews and decided to give TM Deluxe 20 a go and am not disappointed. The only con I have is that it doesn't come bundled with a foot switch as this is pretty essential in any live setting. Within hours of arrival it was on the way to the rehearsal room. I use the amp with a 2x12 cab loaded with celestial V30s. Plugged in the amp, plugged in the footswitch, set the tone controls to mid setting, adjusted the levels of the channels to give a mild crunch on the clean channel and an overdriven "rhythm" tone on the lead channel with the same volume on each channel and ran through the entire set without changing anything. Several gigs in and I still haven't tweaked much. We play a mix of fairly hard edged R&B as a power trio and I get full and rounded tones from this little amp that sit well in the mix with more than enough balls for most of the venues we play. IMHO H&K's approach is perfect for the lunchbox format. They've concentrated on creating separate channel voicings that are fit for purpose and what they have chosen works great for me. If you are used to using the tone controls on the amp to get the sound you want, this amp takes a different approach. As I see it the tone controls allow you to tweak the sound for the room and stage dynamics you're dealing with. If you don't like the basic channel voicings H&K have given you then this is probably not the amp for you, though I struggle to see what is not to like. It also take the guess work out of things. I toyed with giving the amp four stars for features as it is a lunch box and lacks the versatility of it's grown up brothers, but given the sheer useability of the amp combined with power soak, red box DI and a effects loop I believe it rates 5 stars for the format.