Advanced, yet simple technical design and exterior design inherited from Yamaha’s HiFi tradition Technologies to ensure high sound quality playing of CDs, such as variable-speed buffering that stabilises the rotation rate of the disk, holding down vibration and mechanical noise during play. Its external appearance features a simple yet luxurious design characteristic shared by all Yamaha HiFi components: a slim disk tray and aluminium rotary knobs on a hair-line finished aluminium front panel. MusicCast Expands Entertainment Possibilities MusicCast employs a high performance wireless network to deliver music and audio enjoyment. It can stream digital music content from your smartphone, PC or NAS to other MusicCast devices in your home. Audio content from Bluetooth®-connected smartphones or tablets can also be streamed to MusicCast devices in multiple rooms. Bluetooth Output for Convenient Music Streaming The CD-NT670D is equipped with the latest Bluetooth technology, making wireless operation more convenient than ever. You can stream music from the CD-NT670D to Bluetooth headphones for private listening or to Bluetooth speakers.