My version of ProtoDAC

Diy and Tweaks Diy and Tweaks
61

Ah okay! Thought there was an option to swap them in the ProtoDac v2 with one of the chips mentioned in this threat.

If someone needs a TDA1541 send me a PM :slight_smile:

62

Hello,

How did you manage to invert the phase in volumio?

63

Hi Carlos,

I don’t and there is no need to invert the phase. The signals are AC, the phase doesn’t matter.
My tube amp inverts the signal twice with 6SN7, and inverts the signal again with 300B, the final output is 180 deg out of phase. There is nothing wrong with the sound no matter the tube amp is fed with ProtoDAC or other 0 deg DAC such as PCM5242.

P.S. Phase inversion with power transformer is another story due to the internal construction.