About a year ago Louis was touring the US and stopped by my place with a Firewall prototype. It had 8 Oyaide outlets with the carbon fiber plates and the case was carbon fiber, not wood (although I suspect the wood is masking the carbon fiber casing for aesthetics purposes). We hooked it up and the drop in noise floor was immediately noticeable. We listened to it in the system for about an hour or so. At the time I was also testing out an Exact Power 15A in my system. I thought the Firewall prototype was better. Given the price difference though, the Exact Power is an excellent product and does what it advertises. If we had the time I would have liked to have tested the Firewall against my RSA Haley, which had been a staple in my system for quite some time.