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What's you opinions on the value of such an amp when completed? Not a factory original iic+, but electrically identical and using mesa transformers, iib mojo etc

Sounds good. What pickups were you using?

It doesnt really matter, all you need is the right voltage for the B+ and heaters. Measure your B+ and find a transformer that will give you at least that. Dropper resistors can be tweaked to get the B+ right at the preamp nodes.

I recently built an EVH partscaster using a SGW 10-16" neck, I really recommend that if you go that route.

I bought the phone app which is a fixed fee. The extra features are worth it for that, but other options for a desktop version

I have a IIB, even boosted it has a vintage thing happening in the tone. Not as aggressive as my other later marks but does it's cool thing.

What's you guys perspective on the value of a IIB which has been upgraded to a IIc+ (HRGX)

Last weekend I made a couple of mods - jumped the three 100ohm cathode resistors and put a 5n cap over plate resistor of the second stage (same as Rev F). Whole new amp, sounds great now.

I think I have the revision before yours, 2004 or so. I think that is the worst one. I have a mark ii, iii and v, impossible to like the DR with those around sadly

The JEL has a bright cap

What PCB revision and serial is yours? I cant stand my three channel, worst amp ive ever heard :/

When he wound the voltage down on the variac the amp was only capable of putting out about 30W though

Could try a 680n or 25u cap over the third cathode resistor. Those tend to sound pretty good

The Rullywow board didnt get the circuit quite right. I forget how they designed it, but I think it doesnt run enough voltage to get the headroom for the boost the circuit is capable of. The pedalpcb circuit got it perfect.

Yeah that's a possibility. Randall did an LND150 preamp with the satan 50w clean channel. Being James Brown is well down the solid state distortion rabbit hole with his amptweaker pedals, personally I'm expecting something similar to his pedal as the preamp...

With two 12ax7s, I wonder what each one will be for. One for the phase inverter I assume, that leaves two gain stages... The 5150 and 5152 need five stages, and 6 for the 5153. So definitely going to be a mostly, if not all, solid state preamp/distortion. No thanks.

5153s are quite different from a circuit perspective. Tighter than the II - higher corner the frequency at the start of the preamp, and higher gain from biasing the cold stage a bit warmer. The tightness setting is also gain dependent, in the 5150 and 5152 the tightness decreases with increasing...

Try turning the BEOD internal trim pot to zero and see how that sounds

Man my rev G three channel dual rec sounds like complete ass. All fizz and flub.. I'm going to have to try those mods

Plenty you can do with a GH100l. 6 gain stages to play with