I've been thinking about the same for awhile now. GREAT amp, I just have others I like more. I've tried it all with my Quick Rod and I agree, the tone of that clean circuit is just stale. Sure speakers and tubes can help but you can't change the initial "base" tone of the cleans. I had best results with a TungSol 12ax7 in the clean channel. Still has some punch to the cleans though. You want great cleans and great modded plexi overdrive drop the coin on a new or used BE100. Or if cleans are more important to you and want a great rock tone, the 20th Shiva has the best cleans of any modern amp I've ever had. The Mark V was a close 2nd but I like the richness of the Shiva cleans.