Hi,
Is it better to turn the volume at max on the DAC and then manage with the amp or whatever ? (in fact I will maybe buy the SMSL SP200 and the TOPPING D50s, and the D50s has a remote control ...).
Thank you in advance for your opinions.
Actually it is best to set the DAC to -6dB and control the volume with the amp.
Reason: the occasional intersample overs.
Distortion performance of the D50 at -6dB and 0dB is very similar so there is no loss in fidelity. Noise floor is still far below that of any recording.
As garbulky and Veri already mentioned, the volume control of the amp may have quite some channel imbalance below 10 o'clock.
You may be lucky and have a decent pot in there. As long as you don't hear the stereo image shift to the left or right at lower volume settings there is no real problem.