I'd go with one of the ultra low capacitance Ultra/Extreme/High Isolation transformers from the likes of Topaz/MGE/ECA/Xentek/Elgar/Daitron. A lot of them come with balanced output (and it not they can be wired that way). They may also come with a film capacitor on the outlet output. The best of the lot will have .0005, .0001, or even .00001 pico farad capacitance and -150 dB+ and -65+ common and normal mode noise reduction respectively. Then have a nice passive power strip plugged into it to plug in all your components.
The BPT 10.5 and 3.5 units also seem to be a real bang for your buck with a giant Plitron toroid, and extra shielding, premium wiring and outlets, capacitors on the outlets, and other goodies.
As for a UPS, they are a great option, go for an on-line (not like internet online) double conversion unit from the likes of Eaton, Liebert, APS, Cyberpower, MGE, or SurgeX. In my research Liebert has the lowest THD and highest Power Factor capabilities. I cannot speak for other noise reduction capabilities. I know Furman, Monster (in the past), and PS Audio make or have made UPS' but I am not sure if any of those are on-line units.
There's a better option of ac power source/power supply generators that are better then UPS' or audiophile regenerator units. They are sine wave ac generators where you can choose the frequency and voltage output, but they rarely have a built in outlet, and cost a lot for high VA/Watts output. You can find quite a few with 900 VA output with a single duplex, not many with output over 1,000 VA. I just saw a couple of Titan MAC 01 units on eBay with 1,000 VA output.
There's also Topaz and MGE line conditioner/power conditioner + voltage regulators. They have a large transformer in them that is saturated by a large capacitor but aren't just isolation transformers.