Jabb, looking at a 568.2mm rear view you can see 30VA power rating and T125mA @ 240V slowblow fuse rating which implies not more than 20W-25W continuous. I wouldn't recommend a UPS since the inverter it uses will generate noise/interference.
Graham

Last edited by GMS; 2012-02-12 10:15. Reason: add info
#1: StormAudioISPEliteMk1;DSP5K2/5K2HC/D33x6/D2500;RoonRock/Tidal
RegaPlanar3/RB250/Carbon/NADPP2;SonyTCK850es;CaCXUHD;CaAzure651T;GoogleTV; FireTV4KMax;AppleTV4k;Virgin360/Philips 65OLED950;SonosArc
#2: 562v2;DSP5K;FireTV;SonyBDPS3700;CAAzure640T
Spare: 568.2mm (faulty);596s;DSP5000C;M60C;Explorer2;G68ADV;