Electronics: LJM L20SE AmplifierThis power amp was originally based around two 'LJM MX50X2' modules purchased off Ebay from a Chinese vendor.
Having spent a fair amount of time unsuccessfully trying to source suitable heatsinks, I eventually went in search of a donor amplifier, and knowing that most Rotel models have generously rated heatsinks, I found an RB-956AX on Ebay for a good price, so I bought it.
It's powered by two toroidal transformers from a Cambridge A5.
I have also changed the protection circuit to a Velleman K4700 protection board (this is now known as a WSAH4700 which appears to be a fully built module - mine was a kit).
I bought two faulty Cambridge A5 amps as scrap off Ebay.