And another interesting change for SA-50 I noticed. The SA-50 needs min. 20 hours break-in period until sounding tidy. When SA-60, I had the first few minutes the feeling it sounds scratchy, but after 5 minutes it was over. In my opinion, the TPA3116 chip from Texas Instruments does not require a long break-in period more.
Only the power supply and the package I have to criticize. The power supply does not fit properly into the carton. The cord was strongly bent upon delivery. In addition, it makes no impression of quality and it has only 19V output voltage. The amplifier itself is given but with 24V.
Unfortunately, the Loudness function is good for nothing. The Bass suggests itself so unnatural to the fore. As a slightly more subtle adjustment would have been the better choice.
And one more important note: The device is now a CE mark (was not the case with the SA-50)
From me a strong buy recommendation. The part is the hammer.