The Samsung on-line manuals are just about useless as they are generic to dozen of models - I couldn't find the manual on my set or this one either. The web site (under features) says that this set has an "Audio out mini jack" and a "Digital audio optical output" - same as my Samsung. Some of these sets also have a combo optical / audio mini jack port. The power output of the mini jack should be able to drive the headphones directly.
1. The digital audio can be fed to an AVR and decoded and use the AVR volume control. I use the "Audio out mini jack" and feed the output to my Bluetooth transmitter, select "Audio Out: Fixed" in the TV menu and use the volume control on the headphones.
2. Use the audio out mini jack directly: turn off the TV speakers in the TV menu, select "Audio Out: Varable" in the TV menu and use the volume control on the TV remote. You will just connect the headphones directly to the TV's output mini jack or use an extension cable.
2-Ch (HT L/R): Oppo BDP-105 BD, Adcom GFP-750 pre, Bryston 10B Sub Xover, Bryston 4BSST2 / Paradigm Signature S4 v.2 (L/R), (2) SVS SB12-NSD (Subs)
Home Theater: Bryston 4BSST2 amp / Paradigm CC-590 (C), Outlaw 7700 amp / (4) Def Tech UIW-RSSII (LS/RS/LB/RB), Samsung 46” 3D LCD