Make a preamp with an already buil amplifier

[fabinto]

hello everybody

Can you help me to take the audio signal in my amplifier to an output RCA for just
préamp (no power signal).

My amp is

For préamp 2 X 6n3 tube
For amp 4 X EL84 tube

Where can i take the signal (on the two 6N3 ?), must a put some resistor to have the good impedance ?

I would like to make

CD player---->preamp (amp modified)------>another power amplifier or mixer...

Sorry for my english

Best regards
Fabien

 

[d2134]

Can you post the existent schematic?

 

[kevinkr]

hello everybody

Can you help me to take the audio signal in my amplifier to an output RCA for just
préamp (no power signal).

My amp is

For préamp 2 X 6n3 tube
For amp 4 X EL84 tube

Where can i take the signal (on the two 6N3 ?), must a put some resistor to have the good impedance ?

I would like to make

CD player---->preamp (amp modified)------>another power amplifier or mixer...

Sorry for my english

Best regards
Fabien

It doesn't sound like this design has a dedicated pre-amp stage from your limited description. I assume the signal goes straight from the volume control right into the first stage of the power amplifier. The 2 6N3 are part of the driver circuitry of your amplifier - EL84 is a single power pentode unlike say the ECL86 which is a triode/pentode. You'd be better off building a little line stage for this application - a good diy first project IMHO..