The DAC amps are extremely clean and less distortion can be a really good thing. It's already amazing sounding amp line. If its now a better sounding amp, it is a good thing for the audio world.
Tommy- Specs aside, can you share if the amp sounds better with this change?
So far, this result is only from a simulation, but we've come to the point where sim results are very close to real life -- with the right components and layout.
More importantly, the output impedance is close enough to zero that damping factor over 1000 is easily exceeded. That's where trace, wire, and connector resistance actually make a difference.
Sound quality wise, we've found that you can hear the difference, but more from the way the amp handles transients and arbitrary waveform tracking toward the extremes of current draw. So much is in the implementation and not the specifications, per se. Items like power supply rejection ratio and the noise floor shape play a part in what you hear as well.
There's no such thing as a "perfect amplifier", but we're getting closer!