ProtoDAC TDA1387 X8 project

[bobdcarr]

Rather than a reclocker/isolator, you could just add a DIR9001 SPDIF to I2S board. Then use your Allo DigiOne to feed it SPDIF.  The DigiOne already has isolation and low jitter.

GPIO pin 12 = BCK, pin 35 = LRCK, pin 40 = DATA

Connections

Thanks, being a master tweaker, I will now have to try what you suggested since the SPDIF to I2S board is so inexpensive. I am currently running 2 Allo Digione Pi's so I can afford to experiment with one. I plan on building an enclosure with all of the components.

As far as LifePO, I wonder if anyone has tried using a USB Lithium Power Bank so I can leave it in the enclosure, just charge it from the 5V linear that will power the Pi and run the output to the ProtoDAC PCB.

Cheers!

The lithium battery power banks have a DC-DC converter, so they are noisy, but OK to power the RPi especially if you have isolation to ProtoDAC.

The other nice thing about the DIR9001 setup is that it and ProtoDAC can be in their own enclosure, and with the coax cable provide some distance away from the noisy RPi.

I have 7.4V battery packs and was going to regulate down to 5V, but can the ProtoDAC board handle the 7.4 (which can go to 8.6V)?


Another consideration is, how do people deal with charging LifePO? Was wondering the same for Allo Signature. 

I did notice the Digione cleaned up the bass, compared to my previous Hifiberry DigiPro+