@tvad
i agree with the above 100% -- jj's are just downright poor in sound
i believe the op has either:
a) a sensitivity mismatch between the QS pre and Odyssey amp (as I said earlier, the Odyssey’s are very sensitive, too sensitive)
b) a malfunctioning QS pre
c) noisier than normal tubes
this also reminds use why there is a longstanding market for really good solid state preamps like ayre, pass etc etc
That said, I have tried most of the available new production tubes from JJ, Shuguang, etc, as well as dozens and dozens of premium vintage NOS tubes.
Without question, JJ have been the poorest sounding tubes in all my components. There isn’t a close second. Shuguang have been the best sounding new production tubes.
For vintage tubes, my best resources have been Andy at Vintage Tube Services, Upscale Audio, and Brent Jesse. I am interested to try tubes from RAM Labs http://www.tubeaudiostore.com
i agree with the above 100% -- jj's are just downright poor in sound
i believe the op has either:
a) a sensitivity mismatch between the QS pre and Odyssey amp (as I said earlier, the Odyssey’s are very sensitive, too sensitive)
b) a malfunctioning QS pre
c) noisier than normal tubes
this also reminds use why there is a longstanding market for really good solid state preamps like ayre, pass etc etc