I find the tubes conrad-johnson sells to be thin and wiry sounding. These are the east german rft types. Dick Olsher says these are head and shoulders above the rest. I disagree. I own a pv11 and have mullards that sound great. Also have had good results with the yugos but they are a little on the tuby side. Whenever I experience a high pitched microphonic tube I turn the preamp off and on and this usually takes care of the problem. I have a friend with a pv11 that really likes the telefunkens and they were sold to him by upscale audio so I dont know why they werent in a hurry to sell you anything perhaps get a more knowledgable person on the phone next time you call.
Conrad Johnson PV11 tube noise
After about 2 hours of being on, my preamp will occasionally give a sustained "chirp" or sometimes a longer high pitched ringing sound, pretty basic tube noise. I typically listen at low to moderate levels, and it is therefore often audible during listening. What can I do? CJ says to use the tubes they supply, because it was designed around them, Upscale Audio says that the PV 11 is a pain with regard to retubng, and He wasnt in a hurry to sell me ANYTHING because of this. It simply cant be that this type of noise is just what you have to deal with when you want to use a tubed pre. What do you think I should do?? Has anyone used a PV 11 successfully with NOS or other non-CJ supplied tubes?? Thanks.
- ...
- 10 posts total
- 10 posts total