Responses from mscetal

Planar Speakers and Diffusors
I use QRD diffusers behind in my system Magnepan 3.7 and GR Research triple 12” subwoofers.  You can see in my system page.  I have been very happy with the results.  I recommend it.  
What is the actual percentage of people exclusively listening to vinyl vs digital?
I am 57 and exclusively listen to vinyl.  When my CD player stopped working, I did not replace it.  My vinyl always sounded better and I am not about to spend money on a new player that couldn’t compete with my vinyl.  Just use the money to buy mo... 
Suggestions for side wood panel selection / choice for a custom 2A3 build...
I built my tube preamp with anodized black aluminum top and maple chassis frame.  I like the finished