Gustard just finished the x20....the x30 or whatever probably won't be out for a year or more. I would rather have todays best DAC tweaked out then tomorrows DAC stock. Tweaks: clocks, output stages, power supplies, etc...make more difference than a DAC chip. This has been my experience since day one. All the stock DACs with a single 9018 sound completely different from each other....some sounding very digital and some very, very nice......but none have been really tweaked like I am going to do. A Gustard X20 with mods will simply kill any DAC with the "current" 9018 chip. If a modded Gustard x20 beats your current $10,000 DAC then you can sell it now before the new Chinese DACs show up making your now obsolete DAC worth very little on the used market. A modded x20 could be used for years without it being obsolete as most all the other manufacturers are not tweaky. Anotherwords, I believe a modded x20 will beat a stock x30........and since these things are so cheap....you can have great sound now for a couple of years and then get the latest thing from China with dual 9038s in them and have it modded......for the then latest tweaky thang.....all without spending hardly any money. You could use the modded x20 in another system......if it already sounds better than an Yggy and Vega....just imagine how it will sound modded! No more expensive DACs from now on......this is what I and many others would like to have.