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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 ?

aaddmann
aaddmann OP
6 posts
 

Thank you for your help.

I ordered Electro-Harmonix 6922 EH Gold Pin from Tube Depot as you suggested.

 

aaddmann OP
6 posts
 

More Help!

Received electro-harmonix 6922 gold tube for Audio Research LS2B MKII , now need to know can I just install it, or do I need to set Bias etc?

I read online about bias adjustment and gain adjustment but can't find a service manual online. 

newbee
4,775 posts
 

Just plug it in. Give it at least 24 hours of play time before you reach any conclusions as to 'sound'. 

robob's avatar
Ag insider logo xs@2x
robob
202 posts
 

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

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