In most experienced users minds there are many other tubes that sound better than Electro-Harmonix. For 6922s try the Phillips from Holland.
Good listening,
Robert
Need advice
I am new to this and need advice .
I have just become aware of some hiss coming from my preamp, Audio Research LS 2B Mkll. Think it might be caused by the tube ? Current tube Electro Harmonix 6922,
What tube should I replace it with for least noise and best sound?
Is there anything else I need to do ?