@cel4145 The Audio Gd 11 amp has the 9018 chip. Compare to D50S which has the 9038 chip. Its like iphone 6 vs Iphone 10. Its becoming obvious now that modern chips are getting better in sound quality and built-in implementation. The biggest plus is that newer modern chips are properly being executed in affordable products. So now we can get a $250 dac that would of cost in 1995 or 2005 about $5000. I also notice that R2R dacs has the worst measurements. So, I somewhat do not like measuring R2R dacs because it is a distortion mess. But dose it sound good? Maybe? Hard to say. I personally like R2R dacs.