Genos without powered speakers draws 15.5Watts/30.5VA (-26.3VARS) with a power factor of 0.51. This was measure on a 240V mains supply, 110V mains should be similar. Powered speakers will draw a lot more power. As the mains power is connected direct to the Genos you will need to use a pure sinewave UPS as the high frequency harmonics in a simulated sinewave (stepped square wave) UPS could induce into the sensitive electronics within the Genos - especially the microphone input. A UPS will have a Watt and VA rating eg 600W/900VA, if you are connecting multiple devices, the Watt rating of each device can be added to give total Watts but the VA cannot be directly added together. However if you do add VA, if the total VA is less than the UPS rating you will be Ok - the actual VA will be less than this.