Both have developed a slight hum and power-up thumps on the RHS
channel, and to be quite honest, I've had it with lugging them up and
down stairs to test.
If anyone is interested in taking them off my hands (for a small
donation or otherwise) then please feel free to contact me. They are
at present, in West London, UK.

Cheers

--
steve AT steveevans DOT org