I have listened to and done mods for Link DAC I, II and III's and the Gold Link DAC and have also listened using the upsampling upgrade. The Gold Link DAC is very similar to the regular Link DAC with the exception that it uses 4 distinct DAC chips rather than one and the power is filtered a bit better. There are a few other differences, but not nearly enough to justify the extra cost. I have found that the stock unit, even after being burned in properly - 200 hrs + - still does sound a bit forward and edgey...still it sounds remarkable for its price point. In my opinion, mods to the DAC make more of a difference than the upsampling or the upgraded PS alone. I have been doing extensive mods on the Link DAC's that REALLY elevate the performance a significant amount for only $200. For details about the mods I offer, go to www.themorgue.org/audio/msb-link and follow the links to the page. You will also find a lot of information and reviews of my work on www.audioasylum.com when doing a search of the archives under the "digital" or "tweakers" forums using my name "Dan W" and "MSB Link DAC mods". MSB offers similar mods to mine for a lot more money and with lesser quality parts. I use polystyrene caps, LT1364 op-amps, Caddock and Vishay resistors and completely overhaul the analog output stage of the DAC. I am currently working on a completely re-designed analog stage for the Link DAC using four single Burr Brown OP-amps, the OPA-627 - BB's very best and expensive at $14 per op-amp. I suspect that the price for this mod will be similar to the $200 price for my standard mod. If you haven't heard the Link DAC with mods, before you sell it, I would encourage you to research what others have said about the Link DAC after being modified. Take care, Dan W.