Brand: JVC Kenwood Color: Blue Headphones Type: In-Ear Headphone Jack: USB Model Name: SU AX7 Connectivity Technology: Wired The "SU-AX7" features the new "K2 Technology" which can upconvert "non-Hi-Res audio sources" to Hi-Res quality and further enhance the sound quality of "Hi-Res audio sources." Furthermore, with its high-quality sound design incorporating our acoustic technology, a high-quality D/A converter, and a built-in amplifier, you can enjoy various audio sources with improved sound quality both indoors and outdoors. It supports playback of Hi-Res audio sources up to 192kHz/24bit and is compatible with a variety of devices including iPod/iPhone/iPad, PCs, and Hi-Res compatible DAPs. You can upconvert the "non-Hi-Res audio sources" you've been listening to and enjoy "Hi-Res audio sources" with even higher sound quality. Also, it is possible to connect with analog signals via the LINE input terminal, allowing you to fully enjoy the performance of the amplifier itself. Although it is new and unused, as shown in the fourth photo, some accessories are missing, and everything in the photo is all that is included. Please understand.