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In triode mode the mids with the EL34s are very full and sound pretty good. But I'm a bit tube curious and research that the KT88s and EL34s are sort of on opposite ends So this is a long winded way to ask whether there actually is tube burn in (I think but I'm not sure that the EL34s from Rogers (Mullard) came with some pre-burn in) and whether I am way too early to judge how any of these tubes really sound? If so, is there a burn in process and how long should they be played or left on in order to achieve their actual selves?
I doubt Rogers or Mullard had made the initial burn in, so with 70 hours use you already made your amp test pilot and the getters already had being activated and no prob surfaced.The break-in to sound settlement are greater than 70 hours though.
So do you just use the amp normally or do you keep it on all night to get the hours in on them or something else?
If you've got 70 hours on the Mullard's they are broken in and not likely to change anymore. The Gold Lion KT-77's are a good alternative if you want to try something different.
I'm now on the KT77s and I think they are as advertised, in the middle. I think I'm getting an initial glare as some have described it so I'm going to see if that clears out over time.
The KT77s have stayed bright and actually difficult to listen to. I'm back with the EL34s with the rich mid-tones and feel like I've wasted money trying these other two tubes other than the 6CA7s make the amp sound close to a solid state, very clean.