I have for sale a mint condition Eastern Electric DAC I bought directly from Morningstar Audio in late 2010. While I’ve enjoyed this DAC, I have never been able to hear much difference between the tube stage and solid state, although I admit to only trying a few tubes in it. It currently has an Electro Harmonix 12AU7 tube. I really like the Sabre DAC chip, which is very detailed while still being easy to listen to and non-fatiguing. It will ship with the original box and owners-manual. Asking $600 plus shipping (no charge for Paypal). Please email me for pics. Please respond directly to meicheng101@sbcglobal.net I check email a lot more often than AC. Thanks.