Originally Posted by Roger Olney
Whilst 5.2V is the voltage M specify I'd be surprised if it were critical to within 0.2V

So would I, that would be an operating tolerance of <5% - very worrying if true.

Main system - Sources (Kodi-HTPC, Vero 4k, FireTV, Sat) into Trinnov Altitude 32 (8-16) (+Roon), Trinnov Amplitude 8 amp & Vivid Audio (Giya G3, V1.5) and REL Stentor III speakers. Others: F80 + Raspberry Pi and other Pi systems.