Power conditioner plugged into computer battery

I am thinking about one of the better power conditioner plugged into an APC computer UPS with battery. The battery is only to keep power coming when there is an outage. It's the audiophile grade power conditioner that corrects for problems. What I don't know are: (1) can the conditioner correct for typical square wave generation from the battery; (2) I heard it switches to battery mode during outage, thus is it true that during normal operation the power conditioner would receive fully non-filtered electricity capable of handling things like transient current spike needed for the amplifier. Manufacturers of audiophile grade power conditioners would most likely expect you to plug their equipment directly into a wall outlet, and not through a possibly filtered system like the UPS. So the easiest way to find out would be asking if anybody plug their power conditioner into a computer battery back up and find no degradation in sound.

What are a few "caveats" you would consider as exceptions to the rule after an amplifier already charged up its banks?

I currently use an old Power Pack II connecting to a 1100VA APC computer grade UPS. There is no way that I can concurrently turn all stereo gears on at the same time; therefore, the APC didn't trip. So then are you saying that there is no current limitation on the amp when music is playing? APC, in their S-type presentation, remarks that transient current need on some amps could be as high as 30A.

I most likely need to upgrade the Power Pack II. Has anybody compare APC S15 to the established audiophile power conditioners? Secondly, does anybody know if there is no power outage, then the computer grade APC UPS simply works in the bypass mode, sending unfiltered electricity into its outlets? It comes across that this square wave problem only play in when the UPS battery must be used. Thank you.

What I see from the Forum search is that people attempt to just use the computer UPS as a replacement for a separate power conditioner. That's not what I would like to do.

I'll be curious on what Mr_Hosehead means by these "caveats" must be there in order for an amp to dispense high current spikes. Would an amp be able to help itself for a long enough time thus sustaining such spike before it must be fed by high-current electricity?

Ckorody, would you comment about the additional circuitry complication that APC most likely won't do. Are you saying that there will always be a current limit even when the battery is charged up? In other word, it's cheaper to have the battery acting as a capacitor to the wall outlet voltage, as well as acting as the voltage source to all these outlets connecting to it. Are you saying that circuit design to have the charged battery become an open circuit, thus having to re-route these battery outlets elsewhere when the battery is charged up is more expensive? If so, it's interesting that APC and other computer UPS companies uses terms like "switch over" to the battery when there is an outage. Whereas in reality, the battery, half or fully charged, is always acting as the voltage source to its outlets. Then separately we have the scenario of an aged battery that is never fully charged thus the current leak.

Well, thank you for the comments, but the answer to APC S15 is a no. So far, it does not seem as if anybody had serious comparison between APC and the heavy weight audiophile conditioners such as PS Audio, Audio Power, Shunyata, etc. The existing reviews on the internet tend toward peace of mind and security, as opposed to music quality. Even Stereophile didn't focus on sound performance. Incidentally, security and integrity is what the computer industry expects from surge protector/UPS equipment. So something does not add up. The best I heard was about video quality improvement, and that is not enough a basis to judge music performance, especially when we are talking about upper division stereo separates. APC is well recognized in the computer world. Yet with severely limited review on the audio side, I am not about to spend that kind of money on a rather unknown piece of equipment.

I just wing it, and got a used Power Wedge 112. Very interesting result! My computer battery is fully charged, or supposedly fully charged. It's definitely better not to plug the Power Wedge into the APC UPS. No I didn't experience any loss of slam in the bass like what others commented. Pluging the 112 directly to a wall outlet just gives more "natural" sound. I don't want to use words like "vividness" or "crisp". There are plenty of CDPs that give you the razor sharp crystal clear sound which can almost kill your ears within 30 minutes. Skipping the UPS gives me a deeper soundstage and more transparent sound. The fog is lifted.

Audio Power did say that the 3 options for the isolated outlets should be experimented. With my equipment, the balanced AC is actually least desirable. The floating output gives the best result.