• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

pre-amp with voltage gain from transformer only

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AudioGeek

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Joined 2004
#1
Here's what I want to do:

Develop a pre-amp with about 8-9 voltage gain using just transformers (preferably nickel).

Use tubes to get decent input and output impedance.

question is should i:

A) go with transformer / tube / transformer
B) tube / transformer / tube?

I will use cathode followers.

ideas?
 
#2
Input transformers handle signal at lower level and can achieve better common-mode rejection than output transformers. So that's the best place to put it. A cathode follower presents a nice, easy load and can be designed to do a fine job as a buffer for reasonable cable/amp input loads.
 
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