For NOS/ANOS, eBay. Make sure there are test results and the min good rating is mentioned for the specific tube tester they used, and what minimum is e.g. 65%
Best bang for the buck in this territory is a Ken Fischer-modded Komet.
I had stock Komet's and have a Fischer tweaked Comet that he gave/sold directly to a best friend. The Fischer amp sounds way better. More lively - fills the room.
Probably the best 'clean' clips of a SLO I've heard. The time-based effects sound really good through the new loop.
The crunch and overdrive with the bridge pickups sounded harsh/fizzy. But, I've heard a lot of SLO clips that were harsh/fizzy.
This isn't harsh/fizzy but also not close mic'd...
+1
There are too many variables in this comparison - beyond transformers. Comparing two '67 plexis and attributing the difference in tone to the transformers alone is ignoring the fact that many more items in each amp will affect the tone: resistor+capacitor+pot values (drift, material...
Are you an engineer? It's not just about reverse-engineering something. It's also about building an amp/parts with the correct materials (which may no longer exist) and/or correct machines and making it a cost-efficient process.
Dumble is considered one of the brightest minds in the amp world...
I had been pretty dormant for 2-3 years. Sold an amp recently, bought 2 amps (together cheaper than the one sold), and got a Power Station PS-100 (game changer!! besides the great re-amping, the post-distortion FX loop I now can add to any amp is amazing).
The guy I sold my amp to bought at...
Big fan of Jim and his speakers are probably the best made today. He's answered PreRola questions for me when I've cold called him or emailed him.
I've owned probably 20+ of his speakers. All great.
And his epic Greenback thread on TGP has been a superbly useful source of info.
Dang, that's sad news. Sad to see any small business that was around for so long and had such an influence on a scene. His forum was a great source for old Marshall info, as was Plexi palace.
Metro also, imo, really pushed the DIY Marshall scene. You could build/own a quality, hand-wired...
I've always bought from eBay. Just make sure the test results are in the description as well as what equipment was used to test and the description tells what a min and new reading are in comparison.
Also, make sure the feedback is 100%
I've never had any problems. If I get a tube that is...