2. amps-preamps
  3. 1417638938

How do you know when to replace tubes

I recently purchased the Audio research Anniversary reference
The unit has 2600 hours on the tubes.The manual states replace the power supply tubes after 2000 hours.Do you indeed have to replace the tubes even if the sound is good.Another question is tube rolling enhance the sound .As an aside the Audio Research replaced the Einstein Tube pre amp noticeable improvement to the sound ,mainly the lower mid range and bass.
ramy

Showing 2 responses by ghosthouse

ghosthouse's avatar
ghosthouse
4,321 posts
 
I really AM impressed, WG.
ghosthouse's avatar
ghosthouse
4,321 posts
 
Wolf - Seriously? 8000 hrs on power tubes?? I'm impressed.

Regarding 6H30s...did recently replace some Sovteks in my pre-amp with EH
gold pins. The Sovteks had hours on them but tested strong. Noticeable
improvement in sound quality with the EHs installed, however. I wasn't
expecting much and was pleasantly surprised given these are out of the same
factory, gold is just cosmetic, blah blah blah. Very reasonable prices on the EH
6H30 gold pins too.

Maintaining a listening log is a good way to keep track of hours on power tubes.
When they go, they can do damage.
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