ESS9018 I/V

Hello guys,

I'm just looking for an easy and cheap tube I/V for the DAC ESS9018: I own Buffalo III DAC, I'm interested in your opinions about Lukas Fikus schematic using 6sn7, any suggestions to improve or other ideas to have better sound will welcome.

TIA
Felipe

Attached Images

sabre 6sn7.jpg (118.7 KB)