Simple question, probably stupid


Is it necessary to have sound (music or white noise) playing through the speakers when burning in new tubes? I have bought a matched quad of Shuguang KT88 Z Black Treasure tubes to compare with my current Gold Lion KT88 and Tung-Sol KT120 tubes in a Rogue Stereo 90 amp. Reviews of the Shuguang tubes indicate that they need around 200 hours of burn in to reach their true potential but I am not looking forward to having to listen to 200 hours of crap sound.

128x128mazian

Good question, not stupid at all

on, no signal needed, 60 hrs

brent jesse

https://www.audiotubes.com/

advises burning new tubes in for 60 hours, before listening, then judge how they sound.

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my last order, I had working tubes (unmatched, but wanted a new matched pair of 6sn7’s that did not look absolutely identical to my adjacent 6sl7 (I had blown one I somehow put in the wrong socket position after testing them).

Received the new tubes, compared to existing some magic was gone, burnt in 60 hrs, still didn’t like them, returned.

bought a matched set that cost less, full credit, and refund for the price difference balance due. I paid shipping to return them of course.

Magic returned!

That’s the reason I recommend buying from Brent.

 

 

Good question.

 

I have found the majority of tube burn in happens very quickly… about 10 hours. Then the amount of change is vastly smaller.

 

I would get the first ten hours on them. Then enjoy listening. However, obviously if they sound too edgy and not enjoyable… burn in until they do.

 

While you are at it while listening, see if you hear a lot of change. I’d love to hear your observations along the way.

Your question is more an example of too much information on the internet.

"Broken in " tubes are just an enhancement(if at all)to an already good piece of equipment.

Enjoy your new amp and limit audio forum time. 

+1 @larryi Just inset your tubes press play and enjoy the sound steadily improving.