Hi Dutchamps,   I have a few questions:   1: is this the upgraded version of the DAC02 (like yours)? http://www.ebay.co.uk/itm/XiangSheng-DAC02A-Digital-DAC-AD1955-CS8416-24bit-96KHz-/110678904667?pt=LH_DefaultDomain_0&hash=item19c4fa0f5b   2: How much do the Burson opamps cost (inc...