Did you get a pop with the old tube or only the new one? If it's only with the new one, then try putting the old tube back in. If you only have a pop with the new tube, then it would seem the tube is at fault. I had an LS2 for a few years and never had any problems. It should be pretty reliable and reasonably quiet.
audio research ls 2b popping noise?
After about five to ten minutes of warm up i get a loud pop out of the left channel. When i turn on the preamp i have the mute on and the volume set to 0 and after the 45 second mute goes on you should be able to listen to it but a loud pop will occur within the time mentioned above. I did just replace the tube about a week ago from a gold lion 6922 to a telefunken e88cc. After the pop no more pops occur until the next time i start it up, it didn't do this when i first got it. any advise would be appreciated.
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