Audio stands for Turntable and amp isolation ?

Yes, a wall shelf on a timber framed wall is a resonance/stability disaster. Even on a solid wall it's highly suspicious because at the point of stylus contact the shelf could be flapping about alarmingly albeit at levels invisible to the eye. 

But if it has to be a wall shelf then I would suggest that you get one that has the most support at the furthest point from the wall like the ones Rega make and pick the most solid part of the wall that you can.

http://www.rega.co.uk/turntable-wall-bracket-1.html

The amp will be far less sensitive in this regard so you could make do with some sorbothane footers, or the ones Herbie's make. Failing that there is always the old inflatable inner tube!

 Take a look at Timbernation.   Maple stands with the number of shelves you need.  

I use Solid Steel racks for both of my systems, one of which has a VPI Prime.  You can check them out at Music Direct. 

well afer much study I have decided to spend more than I wanted which is always the case I went with 

http://shop.mapleshadestore.com/Three-Shelf-Racks/products/168/

any experience ?