noise thru tube pre??

Wow, a lot of valve love in the room.

You've got a great hybrid preamp. I like the suggestions above. Go with something new and reliable to start, then roll into some NOS later. With only one valve, you can afford top notch NOS.

This was noticed after I rolled the stock Sylvania, with a NOS phillips tube, I dont know if it was doing it before, its not like I walk around tapping equipment (I like to tap my feet though), anyway maybe I need to re-install first tube, as of now I have no tube damper....thanks guys

YOu may not even have a microphonic tube. If you tap a tube directly, you will most likely hear a slight noise from your speakers. When tapping your chassis, depending on the tubes' isolation, you are most likely just transferring the tap to the tube. I'd be alot more worried if I were hearing noises WITHOUT things being tapped!

When I tap the chassis of my preamp it goes, "poommmmmmmmmmm".

This also shows the importance of a chassis designed to absorb resonances and not pass them to the tubes. Most units use folded sheet metal which is inadequate. Very few preamp manufacturers, except for the Very Expensive ones, use correct chassis.

Same with amplifiers. The cost of a truly high quality all aluminim chassis is quite high unless produced in truckload quantities. Even then it is much more expensive than the standard wood with aluminum top plate or folded stainless steel over cheap metal frames.