Eddie's Marshall Preamp Tubes

[BowTie29]

I saw this picture of Eddie's Marshall and it appears he is using less than 3 preamp tubes. I heard it was called the direct bypass mod, but I cant find any other info on it. Anyone know what this is or every tried it? seems interesting...

[randy will never die]

Are you talking about Edda first marshall ?

ACCORDING to Eddie and his techs his marshall was 99% stock

The only thing I think was changed was his tubes in his marshal

There was a device that edd used to control the wattage on the Marshall CANT REMBER WHAT THAT THING WAS CALLED if you look you will find what I am talking about

Otherwise the only thing you need is to change the tubes of a 1959 Marshall
(BAM YOU HAVE A EVH MARSHAL CLONE) better get that frankstrat out


HOPE THIS HELPS

[The Flying Dutchman]

Same amp, but 3 preamp tubes. This was during recording VH2.
Maybe he was just changing tubes there?

[BowTie29]

He could have been changing tubes, I noticed the VH2 picture had all 3, but im not sure when this photo was from. He had a few minor mods done only to do with the caps used, not the design of the circuit and he used a variac transformer and most of the VH1 sound is due to in-studio EQing, reverb,miking, etc... and the amp didn't actually have the tone that comes across on the album. I was intrigued by the missing preamp tubes though and was wondering if anyone has tried it or knows if its safe to do

[The Flying Dutchman]

Oke, tried it tonight with my 1977 jmp. V2 preamp valve removed. Volume 1 channel was a little past 8. Normally this setting would destroy the house..... Didn't expect any sound but to my suprise there was a very clean sound at bedroom level, couldn't get it any louder than that. And no distortion at all. So maybe Ed did remove the V2 to practice quietly backstage? Anyways I like it much better with the V2 back in place.

Some pics of the 'experiment':





On 'full throttle':