So i just repaired the BH15 combo after a long time of not working and now it sings again. the problem was in V2, the tube wasn't working. i was impressed on beautiful vintage crunch from it. the thing is awesome for clean and bluesy tones, but for anything else you must poot a boost pedal infront on it. it works pretty well with OD pedals, the character is still from the amp but with an OD it start crunches and the sound is beautiful. i run it through G12H30 70 Anniversary speaker. for practising you might want to use 7 watt mode and put the volume at 3 or 4 to 10. the only thing i would like about the amp is a bit more gain. but that can be fixed with OD pedal. i am boosting it with Boss SD-1 with Monte Allumns mod. if you want to play metal on it, just crank it to full and put an OD pedal infront of it. on really high volume levels you would need noise pedal gate for that. i must say i am impressed with nice vintage tone from it, and it doesn't sound that bad even on really low volumes.