Today I no longer found it, a mini-jack male-female extension cable with volume control (separate per channel, which also allows correct balance if you have an ear slightly weakened compared to the other ) than specialist deaf, Sennheiser. But I had paid also quite expensive (around 30 euros except error). However, still remains a problem: one can thus adjust the volume to put down if it's too strong, but not higher than what gives the audio output of the TV (which is quite low for me). It is therefore so well pass by a chain or at least an amp or just a small separate pre-amp as I had one that actually dragged (this is enough to amplify the sound just for headphone listening and will rightly Beware also of preamps provided specifically for headphones, as this is often rather high-end audio equipment and unnecessarily expensive for the case at hand here).