Computer Battery back -up supply

Would using a battery back-up supply intended for computer use be a good idea for preamps and phono stages? Of course that is running it in battery mode and turning off the alarm that warns that no ac is available.
How good is the 60 hz generated in those units? Does it have enough juice for musical peaks?
Search the archivess. This questions has been asked many times.
Stay away from battery back-up units...... Check out Google and read up on "True UPS Systems". A True UPS unit converts the AC line to DC, then converts it back to AC. A good UPS AC sine wave will look pretty close to that of the AC line. Cheaper units are square wave, not good for audio.