Unfortunately almost no parts are available for this unit. However the power section proved tamable.
The most important thing is dampening the CMC's. The key to this is using correctly sized resistors, that are safe. I'm using 3w flameproof ones. Carbon comp would be ideal for extreme voltage but unavailable in higher safe wattage. This is a very apparent improvement.
The next thing I did. I removed the Y caps on line. This is debatable but ultimately I think wise so long as you don't seek approval as a new product. However it may have originally been done out of practice.
Here's where it gets more interesting... I replaced the trashy diode bridge and decoupled it in a non-typical way. I'm not a fan of caps across diodes, but when using fast soft closing ones I've found AC side decoupling is great. There's overall less diode noise, at a minor expense of increased inductance. As far as I can tell it was more than worth trading off a stiff ringing power supply for a little inductance.
It's not burned in, but it's listenable now. I might see if I can figure out how to connect it to a friends more high end system to see if he can be converted to the dark side since he's got a 300w heater for an amp ATM. He'll give some real feedback.
