germanium
Headphoneus Supremus
Quote:
While there is some variation most people who have measured it come up with the same figures as I have right down to the same level of mismatch between the 2 channels.
The DC offset is probably subject to some random variation, especially since the path to the headphone output is fully DC coupled, so the DC offset from the stages before the TPA6120A2 is also amplified. Even in your measurement one channel has 1.5 times higher DC offset than the other.
While there is some variation most people who have measured it come up with the same figures as I have right down to the same level of mismatch between the 2 channels.