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English | HD 660 S
Package contents
1 HD 660 S open, dynamic headphones
1 connection cable with 1/4" (6.35 mm) stereo
jack plug (connected ex works), unbalanced
1connection cable with 4.4 mm Pentaconn
stereo jack plug, balanced
1stereo jack adapter
(1/4" (6.35 mm) to 3.5 mm)
1 instruction manual
1 storage box
Your HD 660 S
The HD 660 S retains all the virtues of its legendary predecessor, the HD 650,
but also represents a decisive step forward technology-wise. Thanks to advanced
simulation possibilities, our engineers were able to further optimize the magnet
system and the shape of the diaphragm. The new transducers are meticulously
measured for each headphones and are hand-selected in pairs. In terms of sound,
the HD 660 S sets a new benchmark in its class and masters the balancing act
between perfect control and fascinating musicality in a playful way. With powerful
bass, seductive timbres and breathtaking clarity, the HD 660 S lets you experi-
ence the pure joy of music.
The Sennheiser HD 660 S will inspire you.
AConnecting the headphones*
▷Select the suitable connection cable for the audio source to which you want
to connect the headphones and change the connection cable as described in
section C:
• 1/4" (6.35 mm) stereo jack plug, unbalanced (can also be connected to a
3.5 mm stereo jack socket by using the supplied adapter)
•4.4 mm Pentaconn stereo jack plug, balanced
▷Connect the headphones to your audio source.
BPutting on the headphones and using them*
▷Put on your headphones and then pull the ear cups down until they rest
comfortably over the ears. Make sure you wear them the right way round by
observing the “R” (right) and “L” (left) markings on the ear cup bands.
▷For optimum sound quality, ensure that the ear cups are not covered.
CChanging the connection cable*
▷Make sure the “R” (right) and “L” (left) markings on the connectors match the
markings on the ear cups. The marking on the connectors must point outward.
▷Insert the connector until it locks into place with an audible click.
* Illustrations can be found on the fold-out pages.