I have a chance to buy a used APC backups power supply, at an extremely good price. I was wanting to run my 2channel system thru this to clean up the AC and provide surge protection and noise filtering. I know absolutely nothing about this stuff and the manufacturer(tech support) doesn't know if it will benefit me either. The unit provides "Full time multi-pole noise filtering : 5% IEEE surge let-through : zero clamping response time : meets UL 1449". This UPS is intended for computer use, and my question is would it work for audio? Thanks for any replies.