[Dreaming Jester]

I'm glad you guys ( @Dreaming Jester @ViperGeek @timbukktwo ) are still happy with the m920 unit. Since I'm not a pro user I don't think I will need inputs like bnc & AES. This post provides a feature comparison between the HA-1 and m920; since it's written by a HA-1 owner I think there might be some bias in his view point. The Oppo Sonica DAC doesn't have an amp unit; it come with a network streamer, which is interesting. It also comes with the newer ES9038-pro dac chip.

Some of the features and the inputs/outputs of the m920 are not only beneficial to pro users. BTW, it's not BNC, it's a standard RCA S/PDIF connection. Yes, there is some bias in that post. As for the actual chips used, I doubt the difference would be so easily heard all other things being equal. According to people who are competent, it's more a matter of implementation, design choices and the output stage that follows the DAC chip. In the end, the choice is yours.

 

[Alanaudio]

I'm selling mine m920 in almost new condition:
https://www.head-fi.org/threads/grace-design-m920-all-in-one-for-sale-price-updated.852504/