The Philips AJ 3551 is wonderfully easy to use, you really need a user manual. Just the time (or the alarm) set the knobs and you're done. The radio part I do not use, so to any comments. Very nice is also the alarm so that you can adjust that he starts quietly and then louder and louder, very pleasant.
The display is a good size, unfortunately unevenly illuminated and can be only in 4 steps in the brightness adjust (here would be an additional knob very useful), so the point deduction. Also bothers me the flashing colon in the time display.
A hum I have not in my model - and I have a sensitive ear.
