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No they don't as far as I know . We are probably returning them for that reason
Sorry, there was a problem. Please try again later.Yes. So after the volume is up all the way on the headphones. You can increase the volume with your tv remote.
Sorry, there was a problem. Please try again later.Hi Rocky, no, headphone volume will always depend on the source where it is connected. The independent volume controls only work as volume support depending on the volume level of the source device. You may be able to adjust the volume level, but you cannot maintain and/or have audio while the source is on mute. You may refer to this link for this unit's specifications: https://docs.sony.com/release//specs/MDRZX220BTB_mksp.pdf Thanks, -Mark
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