I can't destroy the urge to keep upgrading DAC's, so I am posting this beauty as an IC.
This tube DAC has spdif and optical inputs. It is the second edition of the Sigma with upgraded componentry and a front side selection switch. Will include stock chinese tube, and a double mica Sylvania Gold Brand 5751.
When you can find one, these seem to bring around 300$ on ebay. I am looking for an offer around there that takes into account the additional price of the GB.
All offers entertained (including partial trades, but I need cash to upgrade!)