whollender
Well-known member
Nantonos, most higher end DACs seem to use differential current outputs, so it would just be a small tweak to the output section to accommodate balanced outputs as opposed to ground referenced outputs.
The real question is how good it needs to be. I don't think that true 'audiophile' quality is going to be a worthwhile goal, especially in a Teensy style form factor. I was imagining something that would be at least a moderate improvement over the SGTL5000 (eg support for 192kHz sampling, better SNR, etc), but not so much better that it would require the extreme attention to detail that is necessary to achieve 'audiophile' performance. It really depends on what people are looking for.
Matto, a separate power supply would likely help with any digital power supply noise from the Teensy that makes it onto the audio board, but it sounds more like a bad ground connection somewhere. It could also depend on what else is connected to the audioboard, ie speakers vs headphones, etc.
The real question is how good it needs to be. I don't think that true 'audiophile' quality is going to be a worthwhile goal, especially in a Teensy style form factor. I was imagining something that would be at least a moderate improvement over the SGTL5000 (eg support for 192kHz sampling, better SNR, etc), but not so much better that it would require the extreme attention to detail that is necessary to achieve 'audiophile' performance. It really depends on what people are looking for.
Matto, a separate power supply would likely help with any digital power supply noise from the Teensy that makes it onto the audio board, but it sounds more like a bad ground connection somewhere. It could also depend on what else is connected to the audioboard, ie speakers vs headphones, etc.