RME Audio ADI-2 Pro, User Manual

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User’s Guide ADI-2/4 Pro SE - v 1.0
34.20 Phones Distortion Comparison
The Extreme Power output stage remains virtually distortion-free under load until the maximum
level is reached (clipping), which leads to an increasingly lower THD+N as the level increases.
This is not the case with many other headphone amplifiers.
So much for our marketing department. In the following chapter, we will show how that looks like
in reality
– precisely measured.
34.21 Measurements Distortion vs Output Power under Load
Measured with Audio Precision APx555B and the Neurochrome HP-Load. Maximum output
power is in Lo-Power and IEM mode with VOLUME set to +2.5 dB. IEM Balanced equals Lo-
Power unbalanced.