I use the 502DAC with DietPI as a Roon endpoint. I did have to select it in the DietPi Audio config (hifiberry digi+ pro), and then it showed in Roon as an endpoint. I am using the balanced AES output to feed my Schiit Yaggdrasil. It works perfectly! and sounds great! There is not a case for it as far as I know. Someone on their forum asked this same question and got no response.
Otherwise though, the 502DAC has been rock solid in balanced digital out mode. I can’t speak of the DAC part, since I use the digital out.
No metal case is planned, but we did do an acrylic one. It should be ready in just a week or two. Anyone who bought a 502DAC will get one free with only shipping cost required. There will also be one for the 502AES as well as our upcoming 502HTA (Hybrid Tube Amp replacing the 503HTA) and our 502DAC2 (AK4490EQ) and 502DAC3 (PCM1798) each with an LME49720/ME49600 Headphone Amp. The 502DAC2/3 will be compatible with the Digi+ Pro and will have the same digital outputs as the 502DAC.
I will be posting datasheets, manuals and 3D renders over the next few weeks on our web site: www.pi2design.com.
The hat can be powered from an external supply or from the Pi. With an external supply you can also power the PI at the same time, or use a separate power supply for the Pi. There is a jumper on the hat that controls this.
502AES is coning September. 502DAC is in stock now. It has Toslink, isolated AES Coax/RCA (we supply the BNC to RCA adapter) and isolated AES balanced via 1/4" TRS jack (we supply the 1/4" to XLR male adapter).
The main benefits of the 502AES is IS2 over HDMI and isolated external clock in option.
Sorry, I lost track of this forum when the messages stopped coming to me. I messed up my account!
Anyway, the 502DAC has the TI PCM5122 and the 502DAC Pro (was 502DAC3) uses the TI PCM1792. The 502DAC2 had some issues in the prototype phase so we pulled it. We will probably do a 502DAC Pro version with an AKM DAC in the future, but likely it will be the AK4497EQ.
P.S. We just went live with an Indiegogo campaign for the 502DAC and 502DAC Pro. We plan to do an updated showing Roon running within a week or so. The campaign is at: