I have an APC S10, and it is among the best audio purchases I've ever made. My entire system is plugged into it, it is absolutely quiet, and it works reliably and exactly as advertised. I happen to have a First Watt M2, and the APC "saves" it and my Spendors from severe power surges and brownouts on a weekly basis (my power here in Ft. Lauderdale is horribly unreliable). Before spending big $$, I encourage you to look for either an S10 or S15
you will be thrilled at the purchase. BTW, I could only find the silver face plate model (hate silver gear), so I (painstakingly) sprayed mine flat black.