I’m one guy who bought a G1 last week, and I’m loving it. It’s a match made in heaven with the DSD.
I have been using various Macs and Android tablets for a couple of years, with BubbleUPnP and Roon. SQ was always good, but not great.
The G1 was a great surprise to me, and has delivered striking sound - far better than any of the any general-purpose-computer stuff I’ve heard. It is as transparent as any source I’ve ever heard - even sounds better than CDs on my heavily-modified Oppo.
I’ve been using BubbleDS with it, and it works like Auralic’s Lightning DS player app - it sends the playlist to the G1, and the G1 takes over from there - retrieving the music and playing it back through a 1gB buffer for best sound - Bubble or Lightning is only the real-time control and visualization app. The significant shortcoming with Bubble is that it doesn’t offer any Internet radio that I could get working, and Lightning DS does support it well.
By contrast, the Roon support works like Roon on a PC - it sends the music to the Aries in realtime, with the issues which that brings. That’s OK for Internet radio streaming, but Roon has a bad habit of taking over a device and being unwilling to allow other devices to take over even after Roon is terminated, thus, switching between Roon for radio and anything else afterward requires power-cycling the Aries. Roon also goes away when I have to reboot my Mac - another annoyance.
I also dropped Tidal for pitiful content in the music I love (jazz), and MQA is just another lossy codec AFAIC, so I’m now using Qobuz, which I highly recommend as far better sounding and having a huge catalog of my music.
My G1 is connected with Ethernet in and USB to the DSD, which I find less frustrating than the Bridge can be at times. I’ve also read that the G1 wifi works well and sounds good.
My only serious gripe about the G1 is that Auralic’s Lightning app is only available for iOS, not for Android, so I had to order an iPad for a full-function remote control.
(PS - I have read that the Aries’ xlr output can work with i2s, but IIRC, only the USB input on the DSD supports the maximum datarate)