I have the glow one and I use it with 95 db speakers and it rocks!! But well for me I have had many amps and tried this one thinking that I would like the pentode sound and I do but I like the troide sound better so iam letting it go for $400 (firm if you interested) one thing about this amp is it is dead quite,I meand DEAD QUIET!! Put it up full blast and put your ear on the speaker and nothing no sound,I have mistakenly left if on for days at a time thinking it was off.myself I am looking to try a decware zen troide,but if i cannot sell it that's fine also,Nick