Seems alpine its getting into headphones!
http://www.alpineheadphones.com
Looks like they have a built in amp, are wired for sound, but the Amps have dsp eq capabilities that are transmitted to the phones via Bluetooth from an app.
http://www.alpineheadphones.com
Looks like they have a built in amp, are wired for sound, but the Amps have dsp eq capabilities that are transmitted to the phones via Bluetooth from an app.