diyAudio (
-   Tubes / Valves (
-   -   829 or GU-29 audio amplifier schematics? (

AcidEye 2nd February 2007 02:13 PM

829 or GU-29 audio amplifier schematics?
I'm looking for audio amplifier schematics using 829 or GU-29 tubes. After searching this forum, no schematics of my "taste" could be found for these tubes... The following interesting schematic was found for the little brother of the 829, the 832:

Does anyone have a comparable schematic for an amplifier with the 829 or GU-29 tube (more output than 832)? SE schematics are also welcome!



Zibi 2nd February 2007 05:15 PM

AcidEye 3rd February 2007 11:33 AM


These schematics are new for me, maybe I should start searching with Russian characters :-)

Today, I've located the sockets for these tubes at an affordable price, it will take some time before I've located all parts for a complete amp.

Zibi 3rd February 2007 12:00 PM

rtirion 3rd February 2007 12:37 PM

You might want to take a look at


You will find a lot of usefull info there.
I build this fine sounding amp some years ago.


Zibi 3rd February 2007 02:45 PM

AcidEye 3rd February 2007 03:41 PM

For those who are interested in amplifiers with these kind of tubes, I've found a nice project with a tube comparable to the 829 on Jogis page:

For this SE amplifier, the JAN 3E29 tube is used (which is mentioned to be similar to the 829).

Diy martin 3rd February 2007 06:21 PM

This is a nice 829B amp.

I have the tubes en sockets all ready :D

adalin 4th February 2007 06:01 PM

Saw this thread on friday and thought for myself, this I must try

I built a prototype today and I find it quite interresting I must say, the first thing I notised was that the amp is completely noiseless.

When I started the first channel to test it I thought it didnt work, there was no hum or fiss in my speaker. Then I turned the sinusgenerator on and sure, there was sound :)

I havent meassured dist and outputpower yet but there is potensial in this tube, I will build one in a real chassi, thats for sure :)

Got a bad pic from the prototype, I got no real camera so no closeups :(


AcidEye 5th February 2007 09:26 AM

Hi Adalin,

The results from your prototype sound very promising!

Did you use the 829/GU-29 or the 832/GU-32 tube for this setup? What schematic and operating voltage are you using?

Please keep us informed on your project and findings, I like the concept of using unusual tubes for audio applications :-)

Kind regards,


All times are GMT. The time now is 10:12 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 18.75%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio