Hi, I recently purchased TA-10R and I noticed that there is audible hum/hiss noise in the right channel, even when nothing is playing. The noise is not loud, but it’s still audible when music is playing. There is noise coming from the left channel as well, but somewhat fainter. Also there is channel imbalance where the left channel is noticeably louder than the right channel. The right channel, by being more noisy and less loud, makes it easy to hear the noise when music is playing.
I’m suspecting that I may have bad tube. Can I get a tube replacement? My unit was purchased from Drop, it’s not easy to get replacement units from them, so I would like to try replacing the tube part first.