https://archivedforum.beoworld.org:443/forums/13.aspxThe main Meeting Place for BeoWorld members, and the place for General Questions, Answers and things to say! If you have any questions about anything Bang &amp; Olufsen related - please ask. If you have anything to say - please tell!enCommunityServer 2008 SP2 (Build: 31104.93)https://archivedforum.beoworld.org:443/forums/thread/136483.aspxWed, 20 Aug 2008 03:15:58 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:136483Peter0https://archivedforum.beoworld.org:443/forums/thread/136483.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=136483Pretty standard in and out. Pin 2 is the common earth. I attach the bit of the circuit diagram. <br /><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/136470.aspxTue, 19 Aug 2008 19:04:13 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:136470kidthorazine0https://archivedforum.beoworld.org:443/forums/thread/136470.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=136470on my Beocenter 7700 there is a 4 pin din &quot;Line&quot; socket to connect an equalizer,tone filter or noise reduction unit.Is this a standard 4 pin din or does it require the special cable suggested in the user manual (cable 6270215) ?<div style="clear:both;"></div>