TechniSat TECHNIRADIO 3 Instruction Manual page 88

5.3.4 Using headphones
Hearing impairment!
Do not listen to the radio at a high volume with headphones. Doing so can cause
permanent hearing impairment. Turn down the radio volume to the lowest volume
before using headphones.
Only use headphones with a 3.5 mm jack plug.
> Insert the headphone jack into the headphone socket (12) on the back of the
device. Sound will now only be heard via the headphones, and the speaker is
switched to mute.
> If you would like to use the speakers again, unplug the headphones from the
headphone jack on the radio.
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