• 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.

12AU7 tube preamplifier schema

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Hi vnarchitect

I see you are director! Very impressive, and that is probably also the reason you are also a very busy man, fact I recognise from 1 - you do not state what you need from your preamp, 2 - you did not perform a search at this forum or the internet to see the available schematics and 3 - that you don't know that best quality and 12AU7 hardly go together.

tell us, what do you want exactly?
 
vnarchitect,

On the other side of the sea... The KTR from André Cocheteux with 12AT7 tubes...

There is a serie of articles in:
http://www.homecinema-fr.com/forum/

A SRPP praised of high level ; published in revue LED 182/183

http://isasarl.com/ goto: publication / preamplificateur

The upgraded version with 5725 tubes is of the highest level!
http://isasarl.com/ goto: publication / Optimisation

Even if this is a "french site" lot's of schematics are self explanatory.

Alain. ;)
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.