Yes, it is likely that the higher gain in the MC phono section could cause this hissing. Some tubes are quieter than others, and the very high gain in an MC phono stage will show all noise.
New Tubes=Noisy Phono Section with VTL 2.5
I installed new tubes in the MC phono section of my VTL 2.5 preamp. Tubes are GE nos from 1963 purchased from Kevin at Upscale Audio.
When the preamp is on and only with the phono selected you can hear a some what loud hiss through the speakers. Could this be because of the higher Gain needed with the Moving Coil output?
With the CD selected the noise is barely audible.
I do not remember if the stock tubes were this noisy. I guess I could swap the original tubes with the new tubes ( when time permits ) to see if there is a difference. The sound when the music is playing is fine
I'm new to the "tube gear" so any help on this matter would be appreciated.
Thanks, Rick.
When the preamp is on and only with the phono selected you can hear a some what loud hiss through the speakers. Could this be because of the higher Gain needed with the Moving Coil output?
With the CD selected the noise is barely audible.
I do not remember if the stock tubes were this noisy. I guess I could swap the original tubes with the new tubes ( when time permits ) to see if there is a difference. The sound when the music is playing is fine
I'm new to the "tube gear" so any help on this matter would be appreciated.
Thanks, Rick.
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