The workmanship is good and I can say on my device negative inaccuracies. The connectors have a good quality, also the optical port (All my Toslink cable fit what I have already experienced differently)
The 2.5 line display is easy to read and can be dimmed or off. Some tasks (MP3 folder) not enough space for information, but the operation pleasant unobtrusive.
The remote control is actually quite large, but not larger than large remote controls of other devices. Here a second small simple remote control for everyday use would have been nice. All important functions are also operated on the device (yes, even the TV channels).
FM and DAB radio reception both on (cheap) wire antenna, as well as a rod antenna here very well (but safe area dependent). The programming I feel OK, although you may still have been better able to solve some of the functions.
USB mode works with a Micro-USB stick also impeccable. The folder / track selection is satisfactorily resolved. For more convenience, it would need a larger screen.
CD mode I tested only briefly, the drive is virtually inaudible. Even the opt. Input does what it is supposed to replace my TV boxes, which are unfortunately overwhelmed in some films.
About my two old Pioneer CS-777 it delivers from all sources a very good sound.
***
Yes, I have little to complain about, but the device does what it should. Price / performance ratio is absolutely in order.