Recently put this combination to work and while I am thrilled with the sound there is one caveat.
If you power the pi via the DAC you will get an under voltage warning. I asked Allo about this and they were a bit dismissive.
I powered my pi using a 2.4amp 5.1 volt supply and check it with a USB power meter. When powering the rig through the pi, with the DAC getting its power through the GPIO interface, everything was fine.
If I powered the DAC and the pi received its power through the DAC, the pi only received 4.5 volts.
I also checked the 5 volt pins on the J19 plug and they were only 4.5 volts even when powering the DAC directly.
So the moral of the story is power both devices or power the pi, but don't power the BOSS DAC. Even though the Allo support person said this wasn't possible, the meters don't lie.
Bests,
Howard
If you power the pi via the DAC you will get an under voltage warning. I asked Allo about this and they were a bit dismissive.
I powered my pi using a 2.4amp 5.1 volt supply and check it with a USB power meter. When powering the rig through the pi, with the DAC getting its power through the GPIO interface, everything was fine.
If I powered the DAC and the pi received its power through the DAC, the pi only received 4.5 volts.
I also checked the 5 volt pins on the J19 plug and they were only 4.5 volts even when powering the DAC directly.
So the moral of the story is power both devices or power the pi, but don't power the BOSS DAC. Even though the Allo support person said this wasn't possible, the meters don't lie.
Bests,
Howard