Sound: For such a dwarf quite neat and does not distort even at full volume. However, it is easily height-heavy and the simple equalizer can because nothing set.
Radio reception: Both FM and DAB arrive at a clear, interference-free and the TV channels you require.
Operation: The remote control (comes without batteries!) Makes a solid impression and buttons on the unit itself as well.
But what really bothers is the poor readability of the display.
Panel is located on top of the unit, which does not bother me personally though, but certainly restricts the placement options - use the front would have been thoughtful!
CD: The drive works unfortunately quite noisy, so does a slight hearing (eg HörspielCD to fall asleep) not really good, but you get annoying background noise from the CD drive included.
USB: under the standard parameters :-) Works - nothing to complain about!
The Sony CMT-S20B is not to be compared with its nearly 100 high-priced course with HiFi. For nice background music in the office kitchen or dwarf his money's worth, but in any case!