If you are a purchaser of the rev 1, see this thread on DiyAudio: http://www.diyaudio.com/forums/digital-line-level/294351-soekris-sonics-comparisons-other-stuff-5.html#post5110663 Original purchasers of the rev 1 dac boards purchased them assuming, based on the initial sales pitch, that they were finished, tested, functions as advertised, products. Only afterwards did Soekris Engineering admit they were beta tests boards with design issues and did not live up to his initial claims. He has refused to offer any refunds, credits, etc. despite a classic bait and switch. If you were a victim of Soekris Engineering’s dishonest business practices, contact me.