Orange Rockerverb 50 MkII with EL34, KT77, 6550 and KT88 tubes video

**Before anything else, I must say I do not recommend anyone to change their own power tubes without having a qualified technician adjust the bias. Tube amps contain lethal voltages!** Quick skipping guide: EL34 starts at 0:00. KT77 starts at 1:42. 6550 starts at 5:35 and KT88 starts at 9:43 I hadn't read or heard much online of the Rockerverb MkII with different power tubes. So after being very happy with mine for almost a year now, I decided to finally experiment with different power tubes and learn for myself what the tonal differences are. I recorded some clips with each power tube (clean and high gain), with essentially the same EQ settings for both the clean and dirty channel. The only real changes I made were sometimes adjusting the bass on the dirty channel for the more bass-heavy tubes. I also experimented with different bias settings for each tube, since that significantly affected the tone as well. The clip only has the bias settings that I thought sounded best for that tube. By the way the tubes in the preamp section for the distortion channel are EH 12ax7 in the first slot, then a JJ in the second. The rest of the preamp tubes in the amp are stock. Here's my personal ranking and notes with the best sounding bias in parenthesis: 1) JJ KT88 (average bias) - amp sounds huge, really fills up the room more and greatly enhanced clarity from EL34s. 2) JJ 6550 (colder bias) - similar clarity and big sound as KT88s but more focused on lows and highs with a scooped mid ...