Amplifier Hum, and placement.

A headstone? Yikes!! My girlfriend is Chinese, and I believe that would be a no-no (hopefully you're not superstitious!). But seriously, I would e-mail Costa at Sim Audio before messing around with the W-5 (I think its service@simaudio.com, but check the site). He is very helpful- I own the Sim Attraction HT processor, and used to own the Eclipse CD player- they are generally quite good with customer service. Good luck, and great amp!

I once owned an older Classe DR-10 amp that had slight transformer hum. It was annoying between CD tracks but not loud enough to interfere while the music was playing. I sold the amp cheap and all of my recent gear has been "clean" with no transformer hum. I would contact your dealer or the manufacturer because high-end ($$) gear should not do this and you should not have to deal with silly tweaks to try to eliminate it. BTW, placing your amp on a surface to reduce microphonic pickup is probably a good idea but I don't think granite is necessarily a good choice just because its hard and heavy. You might want a good amp stand with spikes.