I bought this amp because I wanted something smaller and easy to carry around . I'm a Jazz ,fusion player and I'm very picky about how my guitar sounds. clean or overdriven. This amp is much more than I expected. I changed the input (!st) valve to an JJ electronic 12AY/ to lower the input gain and put ruby tubes to the other ones to get a higher headroom. Now it takes my pedalboard with boosters and ODÂŽs much better. Delays are in the effects loop. Playing with heavy strings 014-058 needs a good headroom if you want to keep a clean signal, like in jazz. HB 15 can handle that with bravour. Even the spring reverb onboard sounds much fuller with the tube swap.
This amp is great! No regrets whatsoever. Consider even to buy a second one! The speaker as I`ve read, has been disliked by others, but for me it works just fine. And I must say that the Tone knob which are working as a Presence control is the magic of the amp.
To Thomann I would like to give five stars for always delivering and for a great amp.
Don't Hesitate! tube15 is great!