System edited: I just added the Real Traps and it made a huge difference. If your on the fence to add base traps do your self a favor and add them. I've been asked by other audiophiles where am I hiding the sub now.
When I was at CES two years ago when the MB-450's II came out I knew I wanted them. My dealer shortly got them in and had them hooked up to WP8's and I knew they were for me.
I haven't had a chance to compare to other tube amps however I've very happy.
Shadorne:
The WP8's don't have the punch I would like so I'm thinking about adding a sub. I contacted ASC a while ago and have been looking at different options.