A:AnswerThis Headphone Amplifier provides a wireless (Bluetooth) link between the source (the Walkman in this case) and the amplifier, then a WIRED connection between the amplifier and the headphones.
A:AnswerIf your phone has an earphone jack, you might not need this.
Your question is better answered by how many mW
your local headphone amp provides...
No headphone jack, it should meet your needs.
A:AnswerNo, it will not. The intent is to have a wireless (Bluetooth) link between the source (your TV in this case) and the headphone amplifier. The headphones will be WIRED to the amplifier.