Can we get an inside picture?
There are some above, but I will add more later. Due to the construction in two halves its difficult to show it fully connected up, but I can show the two halves seperated.
Mains wiring is twisted, double insulated with glued heatshrink and covered with braiding. The rear of the IEC mains connector is fully insulated with a boot.
The power wiring from the supply to the amp is again tightly twisted and sheathed with braiding. It's as short and routed as directly as possible. Same with the speaker cable, The board has two sets of connections to minimise output impedance which I utilise. . Note that I use BS free copper cable for superior conductivity
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The XLR connector has an input RF filter PCB on its rear to minimise the possibility of issues such as IM. The signal cable is low noise with a secondary conductive sheath between the screen an signal conductors. This minimises tribo electric noise. Its screen correctly goes to chassis as does the xlr connector. It's physically seperated from the mains and smps power cables. The amp module has the Hypex low noise voltage regulators on board to power the input buffer.
There is a very low power standby Psu board which also has the toggle circuit for the piezo touch switch.
Hope that helps, please ask questions
Cheers
Alan