2. amps-preamps
  3. 148868-82593

How do you know when tubes are done?

I have a homemade pre-amp and amp - both tubed.Recently, it became necessary to turn the volume  up quite a bit to get the same sound level.It still sounds good but I started to wonder if a tube or two was the culprit. The tubes are about 8 or 9 years old and  get light to medium use.
Suggestions?

steamboy
millercarbon's avatar
millercarbon
12,531 posts
 
You sneak. Is the Yee a one-off custom or regular product? Either way kinda cool.
shefwed
21 posts
 
I have a Croft pre and power amp. I had the ffffff noise from one speaker, dropped the amps off for Glenn to service, the tube had reached the end of their lives, had them replaced. Sounds amazing now. However there was no loss of volume Glenn described it as a noisy valve! 
mijostyn's avatar
mijostyn
8,570 posts
 
Thanx Veridian! My first ST-70 cost $79 in kit form. Can't remember what the built price was. Those M-125 amps look very interesting maybe for a small system up stairs. Let's see...Rogers LS3-5As. TD 124 with an SME on it. A PAS 3X. Just like old times:)
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steamboy OP
8 posts
 
to Millercarbon,David doesn't have regular products. Each one is different to some degree. He's always trying to get the best sound. The best sound I heard was from a SET design but bass was weak. He's really more interested in circuit tweaking and very minimalist designs. On/off toggle and volume knob only. He has to sell them to recoup the money spent on his 'hobby'.He might still be on Facebook but I don't use it. Can someone check, please?
I just got a pair of Klipsch RP-600M horn speakers. Very sensitive.Good sound and a good bargain, I would say
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