I did buy the following device and installed it to my FFH:
but unfortunately I've faced with problem that sound volume is low.
See some photos and videos by link https://goo.gl/photo...FY8N7ZpMYv5joU8
After some investigation we found that reason can be built-in amplifier(if it's exists) or ANC.
Maybe somebody knows how easy to disconnect active noise cancelation and if it can be a reason in that case?