Need Your Advice on Developing a 5.1 Channel DAC

[jogama]

Fosi is developing a 5.1 Dac pre-amp for home cinema:

https://www.audiosciencereview.com/...advice-on-developing-a-5-1-channel-dac.48502/

The picture proto 2 below shows the concept design of this product. Besides the I/O, it will also have/support：
1. remote control
2. capable of decoding Dolby True HD and DTS HD
3. 100W*3(CEN、FR、FL channel）+50W*2（RL、RR channel）
4. display screen
5. two HDMI eARC interfaces

Proto 1 :

Proto 2 :

If you have ideas to help the engineers and technicians at FOSI AUDIO have developed this home cinema pre-amplifier.

 

[jogama]

I think the pre-amp needs :

• 4 HDMI inputs mini.
• 2 or 3 RCA inputs
• and 1 coaxial and 1 optical.
• Sub output
• 1 calibration microphone for acoustic correction (e.g. ARC, Audyssey) would be a big plus.

The question also is pre-amp or amp?

 

[D1N0##]

I'm not into multi-channel so I wouldn't know

 

[jogama]

Is the project progressing, do you have any new information?