.. for example to help a good sounding amp sound better? Someone on another forum said there shouldn’t be more than 200V at V1. At my Vibro Champ’s V1 I read 220V (spec=205V) at pin 1 and 215 (spec=200V). Is it worth struggling with the dropping resistors? Lately I brought the bias resistor from 570R (->13,5 Watts) down to 470R (stock -> 14,3 Watts). Soundwise that change wasn’t altogether good: Seems I traded „fenderishness for mellowishness“ (oh dear - forgive me). Any thoughts?