soix the issue is clarity not power, i went thru this with my wifes cj mf2500a and jeff told me to have it svcd. its still not broken in yet due to my wife dont play it much and health concerns. it just might be this tube though. i notice i have good days and bad days with these stock 6922's
s bank you might be on to something, but i talked to steve mc and he said he doesnt think it needs svc yet and i dont have problems with my ears so....