Seeking solution for using Sonos Port and Turntable without a Wall Outlet

The Port and turntable (maybe a phono-preamp?) won’t use a lot of power but I’d make sure that the power supply was a full, well regulated sine-wave as you can get noise on your audio signal, or even device damage from a modified-sine-wave supply.

I can’t tell you how much power your gear will draw so you’d have to have that information. When sizing the battery bank you’d see the best price/lifetime balance if you don’t go much below 50% charge. If the device has an option to not fully charge the battery that can also extend the lifetime. Real rough guess when running it low and charging full is about 500 cycles, lower the charge level and reduce the draw-down and you could see a big improvement there.

Great points, and yes, I agree with finding a device that provides sine-wave power. This isn’t my hi-fi setup, and this Project turntable has an on-board phono-stage, so I only need two 110v power sources. Watts are low, I think when using, the Sonos Connect is somewhere between 6 and 10W (at rest, the draw is around 6), can’t find the actual “in-use” draw on this one on a quick internet search. Turntable, I’ll have to do some digging on. 

I’m guessing to have an electrician pull another outlet would be $500-1000, so I have to figure the costs of a large enough power supply of good enough quality into the equation as well.

Thanks. Still wondering if anyone out there has had a similar experience/set up...

Depending on your local rules running an outlet yourself can be an option.

If you look along the wall, on both sides, and find an outlet you can often snake a wire to it and then install a new outlet in your cutout space. The tools (drillbit and wire snake) are going to be a lot less than $500.

No outlet or light switch.