2. amps-preamps
  3. 1007498280

Tube reliability in amps

I am contemplating the purchase of a tube power amp. I already have an Audible Illusions pre-amp, which has given me virtually no problems tube wise. I would like to hear from a bunch of Audiogoners on how long power amp tubes last in the real world, do I have to keep matched pairs or sets around or can I just replace one? Also I have B&W matrix 804's and I have been told tube amps are not a match for them or that I need a lot of power (read expensive tube amp). Wavering between tube and SS, HELP.

PS. I listen to orchestral music and piano. Sometimes loud like about 90 db.

Thanks
drjjpdc
dopogue
1,773 posts
 
I've had very good luck with Conrad-Johson, first MV-75A1s and now Premier l2s. The output tubes are biased individually (and easily). And, IMO, the sound is outstandingly musical. have to confess, though, that the fact CJ is about l2 miles away is very comforting.
avguygeorge
2,300 posts
 
Gads, it ain't just the amp;It's the type of tubes within the amp.My CJ Preimerer 5a's have 16 el 34's.--Rewired for all triode. The Svets last much longer,but are dull, compared to nos Siemens which get eaten at an expensive rate.
musicslug
430 posts
 
Find the amp whose sound you like, then contact the manufacturer to see which brand of tubes he recommends and which setting to bias at. Different brands in different amps perform differently. Also, the guys at the tube store (.com) have a lot of experience with this subject.
blues_man
133 posts
 
Why not choose an amp for it's sound rather than tube life?
drjjpdc OP
78 posts
 
to blues man and the few last posters, I am not an audio novice. It's just that I am a tube novice. I know listening is top priority. It's just that I am not a tweaker. I don't want a lot of down time due to finicky tubes, long warm-ups etc. My listening time is limited as it is. To use an analogy from the the world of cars and bikes, I never understood all the tweaking that the early Harleys or British bikes and cars required. Seemed their owners spent more time fiddling with them than actually driving them. Have the same fear with tube power amps.
More to discover