2. amps-preamps
  3. 1118275078

correct way to turn off tube preamp

I recently purchased a tube preamp. My other equipment is SS which I leave on 24/7. From what I have read I don't want to leave the pre on all the time. When done listening is it ok to put the amp in standby mode, then turn off the pre?,, or should I turn off the pre--leaving the amp on and then going to standby mode on the amp. When I do the latter I get a very samll 'thump' heard through the speakers. Thank you.
classical1
rgs92
958 posts
 
Raquel, I enjoyed your comprehensive response, & 1 question, please. I suppose this 24x7-on approach would apply to my 2 Stax headphone amps? If there are any Stax owners out there, any thoughts? Thanks.
armstrod
498 posts
 
After reading here and in a couple other threads about leaving small-signal tube gear on 24/7, I decided to write the manufacturer about my Wright Sound WLA12A. Here's what George Wright said:

Dear David,

I have worked in the support field for a number of years and serviced tube equipment that ran 24/7, we always had to change out tubes every 6 months because the cathodes would be used up. I suggest that once the equipment is baked in, about 50 hours, to turn off when not in use to saved tube life.

Best,
George

George has been around tubes a long time, so I, for one, would tend to give his opinions careful consideration.

I'll continue to turn mine off when not in use.

David
dougmc
105 posts
 
Newbee - Thanks for your explanations and the advice about starting a new thread when interest starts to tail off. I thought I was still in time on 06/09, but when no responses came in for several days I should have started a new thread.
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