Noisy Sony PSU

[SteveR750]

I've just ordered a new 2012 replacement PSU (genuine Sony) which is identified by a slimmer size, and is rated at 19.5V compared to the original. Most importantly, it eliminates the ground hum loops interference that you can get on USB allegedly.

 

[SteveR750]

Bum steer from another forum specialising in computer audio... |(

What you need is one of these:

https://www.olimex.com/Products/Modules/Interface/USB-ISO/