At the very beginning, I didn't know what I was doing and I biased the headphones upto 1200V and the sound was still too soft. Today, I bias the headphones with 600V. As for amplifier, I got the design from http://www.tubecad.com/november99/page8.html . The design is very good and I highly recommend it to anybody who wants to build an amp for his headphones.



My headphones design is open back, and I like it better this way. However, you need a quiet room to listen to good music with this kind of headphones.



Wachara C.

