Thank you for coming out of retirement to help out a newbie . Any contributions and recommendations are always appreciated.

Thank you very much for that information, you may just have saved me a lot of problems.

Hi there, what a great post, I am just awaiting delivery of my first headphone amplifier. The darkvoice 336se, but relating to the 6sn7 tubes. Do you know if a brimar 6n7gt is safe to use in this model. Please note this is 6n7gt not the 6sn7 gt