diyAudio (
-   Swap Meet (
-   -   FS: 2x GM100 "leviathan" Power TRIODES (

Alexontherocks 6th March 2012 04:29 PM

FS: 2x GM100 "leviathan" Power TRIODES
Hello all. Due to ongoing project with large gu81m (4 of them)

I have to part with two gems. A lucky find from a Ryazan plant warehouse yielded 2 perfect gm100. Apparently these huge triodes are NOS but without boxes. These are the largest and most beautiful tubes on the market

Photo comparison:


The filaments test fine at 12.6v

I ask 150 euros each. Buyer pays shipping. Any method of payment is accepted as long as it is secure for both parties (paypal, bank transfer).

Can arrange specific transportation methods but was thinking EMS for added safety.

For all info please email me at
telephone number can be sent through PM for added guarantee


Alexontherocks 7th March 2012 04:21 PM

bump. I can't believe no one is interested. If price is a concern I am sure we can find a deal. :)


jrenkin 7th March 2012 04:28 PM

Looks like voltage could be why there is not much interest. Best I can tell, not being able to read russian, as you would need 2000-3000volts at 100ma for these. Not for the faint of heart at $300 for the pair.

Alexontherocks 7th March 2012 04:41 PM

yes anode voltage can get pretty high...but lower voltage will work too (allbeit with different behaviour). I know a builder should not say this but these tubes are just beautiful to put in a showcase. I am too deep inside my project to revert to the design stage but even a nice lowe power SET could be built around such a tube.


Alexontherocks 12th March 2012 05:40 PM


Alexontherocks 26th April 2012 01:34 PM

Guys....I got them from the warehouses and tested them for filament power..

I have them here so any photos or info you might need or want I can give you. I also have a datasheet in ukrainian


Alexontherocks 26th April 2012 04:57 PM

jmillerdoc 27th April 2012 03:15 AM

Do you have a project schematic you had in mind for these? Is there a tried design built around these already? If so, I would be interested in seeing it....

Alexontherocks 27th April 2012 07:04 AM

There is a tried schematic in the gm70 yahoo group forum. The driver i am using for my 2kw amp (search gu81m ab2 thread) should work. As i said i am selling for funds. If i had the possibility i would use the gm100 (financial possibility). Obviously this project is NOT a plug&play style kit. This is diy forum afterall!

Inviato dal mio GT-I5800 con Tapatalk 2

Alexontherocks 27th April 2012 07:07 AM

Ask lem8r (a diy member) for custom toroidal transformers. I had a 1700w output transformer core made for my amp per channel.

All times are GMT. The time now is 11:01 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 18.75%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio