I recently acquired these MK-III's that have been modified and wanted to see if anyone was familiar to what has been done. I am curious to see if the work was done satisfactory so as not to have flames shooting out at some point.
I have hooked them up and set the bias at 1.55, they sounded great with no obvious problems. The big blue capacitors were just held in place with silicone, so I installed clamps that hold them in place. Inside the added chassis, there is two chokes of some kind and what looks like large bypass capacitors. I'm hoping someone can explain what was done and how it benefits the amps. It would be nice to know just what I have here. Thanks to anyone that can be of help!