Like all modern devices, the unit has a flash or EEPROM memory. This is non-volatile, i.e. it retains all information even if the power supply fails. So you can pull the plug with impunity during operation. The time is lost, but it is recorded again as soon as a programme is set.
The daily price was changed to CHF 179.00 on 31.05.2018. As we work with daily prices and different suppliers with different conditions, this can lead to the different information.
Yes, you can use Sleep with any source (CD, radio, etc.).
and e.g. programme the alarm clock to radio. So sleep with CD and wake up with selected realisation;-)
In my opinion, this is not possible. The remote control is OK for channel selection, volume, etc., but otherwise it doesn't offer much.
But apart from that, it doesn't offer much.