There's a very long thread about it. How have y'all missed it?
I purchased a Meshuggah—advertised as being a custom design by Mike Fortin with four gain stages. The amp arrived from Michigan... right near Metro, who is known for being contracted to build other companies' amps. The sender's address was the same as on parts shipments I've received from Metro in the past.
The amp didn't work properly. Issues with the EQ and sound cutting out. A tube began smoking and it red plated. I contacted Fortin about it. After a bit of a back and forth where Fortin did the same thing as in the video about the Sigil (claiming nothing was wrong), he agreed to take it back for repair. Before shipping the amp back, I popped it out of the headshell and had a look at the circuit for myself.
Turns out... it's a JCM800 with a 40-year-old Jose mod (zener diodes/transistors). In fact... it's the EXACT SAME CIRCUIT that I had already built for myself about four times a few years before Fortin started selling these amps. And the thread about that circuit, with posts from the community discussing its topology, is on the Metro forum (and Amp Garage and SLO Clone and a few others) from years prior (started by me). And Larry even dropped in to offer some of his suggestions in related threads.
And so I discovered the amp was not really a "custom" design. And it also didn't have four gain stages.
JCM800 with dual gains and a Jose master volume. Hardwired zeners and push/pull for the transistors for more distortion. 330K plate load on V1a, 4700pF bright cap, 68k/68k divider to keep things tight and dump some signal. 0.22uF0.022uF/ couplers, everything else is pretty much a stock JCM800. Easy. Simple. Cheap. Been done a million times before for 40 years.
Instead of fixing the amp, Fortin insisted on refunding me. Sent me a photo of one of the tubes that was clearly burned but told me it was fine and the amp was perfect lol. So yeah... instead of shipping the amp back to me, he refunded me, which I accepted.
I then posted photos and the schematic for the amp to SLO Clone Forum for educational/DIY purposes. People discussed the amp in detail there. Meanwhile, another customer had a problem with his and reached out to me because he was pissed that his $3K JCM800 clone shipped from Metro. I know Metro's work and I instantly recognized my Meshuggah as being built by them. I could just tell from the wiring/soldering/etc. And the address on the box. No big deal really... but hiding that fact is a lie of omission.
A thread about it popped up here. Fortin Army goons defended Fortin. Magically, the amp's description on Fortin's website was changed to fix the 4 gain stage claim, etc.
Anyway, the Meshuggah is a JCM800 clone with a 40-year-old mod that thousands of other DIYers have already built for themselves and shared the circuit on a bunch of forums years before Fortin started selling it as his own custom design. I got no problem with that really, except for how it was marketed. If he had said something like hey it's an 800 clone, outsourced to Metro, with a Jose mod... fine. But that was all hidden behind the marketing.
Meanwhile, Ceriatone hacks into the SLO Clone forum and takes the schematic and starts selling their own Meshuggah clone (Gargoyle).