I own the D2v and my friend (a cable manufacturer) has the H1. The D2v balances neutrality with a fully fleshed out tone, smooth highs and thunderous bass. The new D10 adds streaming and phono capabilities as a full preamp. The H1 is airier, quicker and has tighter bass, good for systems with mini-monitors to enlargen the sound. Forest missing, ha! I'm coming from an EAR Acute player from 2006. The COS is a superior DAC and beautifully manufactured.