2. amps-preamps
  3. 1241558275

Leave tubes in phono section if not using it?

Hi,

I just bought a mid 1980's Moscode Minuet preamp (not Minuet in A) on AudioGon. I haven't received it yet, but I think it uses 4 12AX7's (2 in phono section, 2 in line stage).

I don't plan on using the phono stage. I was thinking of just pulling the tubes in the phono section with the hopes of reducing noise/hum and saving myself two tubes. But, I know I could use shorting plugs on the phono imput jacks to possibly eliminate some noise that way.

My question: Is it possible that pulling the tubes can upset some critical design parameter and create a detrimental situation, or even do some damage?

I will not have a manual or schematic for this unit.

Any thoughts would be much appreciated.

Thanks,

Rich
richgib

Showing 1 response by boby

boby
1 posts
 
Gentlemen I need your knowledge
hello possesses a minuet moscode (not in A) and I read that it had four 12AX7 but I have two 12AX7 and two 12AU7
precisions would you please?
so what tubes is dedicated for phono and which are dedicated to the preamp section?
do you know a way to know and tell me how I could understand?
it is a very very good preamp and I love it like working with my MOSCODE 300!
I search the shema of minuet and 300
thank you for your help because I never found anything on this subject and I despair
(anyone know what it is dedicated tube in the minuet in A? this is the same?)
thank you very much
Bob (France)
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