Hey Guys, I currently have two GE Red Base 5691's which sound great (I have been told the 5692's are kinda lousy). I have a Tung Sol 6SU7 on its way (not black glass). I am thinking about also trying out the Sylvania 6SL7 tube which I have been told are really good. I can choose for a...

Little Dot Tube Amps: Vacuum Tube Rolling Guide   A quick introduction: Who is this guide for? (plus some background)   When I purchased my first Little Dot amplifier in 2005 I was in a position many of you are in now.  I was new to high end headphones, and curious about the ‘tube’ sound...