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?

 

[damodarollu@gmai]

give minimum 600wt output for 5.1channel. and give additional ports for 2 speakers for Dolby Atmos. HDMI eArc, Bluetooth, no heating issues

 

[delaforetnoire]

Audio calibration mic is mandatory !

This is a TRUE product here.

 

[BorisdeFloris]

I would vote for a Pre-Amp, let people choose themselves their amplification.
Dolby Athmos should be supported, so 7.1 at least.

Separate from that I suggest developing a high quality Amplifier with at least 5 channels, level like Fosi V3 with PFFB. With pre-amp separated you give the public the option to futurewise just exchange it to newer standards.

 

[RustyDog]

My vote would be for the preamp aswell. 5.1 . Then choose your amps based on what you need. I would also keep the psu external - saves space and also allows for psu sharing with other devices. (Y leads )

 

[Kristjant]

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?

Agree

 

[Might_Guy]

Hello,
Please consider using the USB as a true class compliant audio input and not just for power, so that your pre-amp can manage a PC either on windows or linux as a multichannel source.
Check out these similar products from ESI Audio (gigaport eX) or Schiit (Syn). Thanks in advance!

 

[IABiD-]

Dac only with addition of xlr is unheard of. it will be a banger!

 

[Charles]

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?

Why do we need four HDMI input ports and which devices are usually connected? How many do you think are the minimum required to reduce the quantity?

 

[fcosta]

I would like to see,

HDMI ARC and CEC (i am assuming CEC will allow for TV to control volume)
5.1 Line out
It should also default to 2 channel or 5.1 channel automatically based on received signal. (NO Balogna VIRTUAL 5.1 or emulated 5.1)

Is that possible?
Having the TV control volume would be key.


thanks

Frank

 

[Charles]

I would like to see,

HDMI ARC and CEC (i am assuming CEC will allow for TV to control volume)
5.1 Line out
It should also default to 2 channel or 5.1 channel automatically based on received signal. (NO Balogna VIRTUAL 5.1 or emulated 5.1)

Is that possible?
Having the TV control volume would be key.


thanks

Frank

Certainly