12AU7 tube preamplifier schema
I need 12AU7 tube preamplifier schema. I have intend DIY a simple preamplifier with best quality.
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?
Take a look at John's site:
There is an Aikido for 9-Pin inputs / outputs 12AU7 etc
PS: I has done the pcb's also:
But you can also build one without pcb ; it's simple and of the "best quality"
On the other side of the sea... The KTR from André Cocheteux with 12AT7 tubes...
There is a serie of articles in:
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.
Valve Preamp 5725 Schematic
Hello, somebody have a nice 5725 valve preamp in triode mode? Thanks and Best regards. Maybee can put directly in EF86 design? im newby in valves. Best regards...
I thought he said simple. :) As I recall the original BH foreplay was a simple RC coupled CC 12AU7 and got pretty good reviews. No doubt the trick is in setting the proper operating point.
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