Since my days of regular gigs in the early 60s and using a Vox AC 30 I now use the humble but adequate Rowland Cube 60 (clean) together with a Boss ME 70.
Not intending to play other than in small surroundings, the Marvin sound I programmed for a mid range volume is absolutely fine...now I have a problem. Ive had cause to use more volume consequently the treble end is way too harsh. 'That sound' on my Boss is a balance between Bass, Mid(especially) and Treble combined with the right delay and modulation..if I turn down the treble on pedal or amp the overall tone/sound changes significantly. No matter what I try I lose 'that sound'. Basically I need to be able to turn up the volume without losing the smooth treble. Tricky one 'ain't it. Perhaps it means a complete re-set on the Boss which I dont relish .... any suggestions other than buy another amp ? John