On August 28, 2016 at 21:58, Mario said...
How are you getting sound distortion?
If this is line level, 0% or 150% should not cause any distortions.
Speaker level on the other hand can and will cause clipping, etc.
I believe the the iMac line level headphone port has the following specs:
- Maximum output voltage: 1.4 VRMS (+5.15 dBu)
- Output impedance: <24 ohms
I understand the consumer line level typically peaks at around 0.3 VRMS with an output impedance of at least 100 ohms. Could this discrepancy be the source of the issue?
My inclination at this point is to take the digital output from the iMac and convert it to analog.