This is a reference price as no car model has been selected.

HEC HD-Audio USB Card

Equipped with a USB mini-B terminal for digital audio signal input,
USB-OTG output from smartphones, mobile players, etc., or from a PC.
Supports PCM stereo signals up to 192KHz/32bit.
*Requires a separately sold remote control (DIRECTOR/URC-3) to adjust the volume.

List price¥ 33,000 (Tax included)