The SMB-02 DS-DAC edition headphone was made exclusively for the KORG 1bit USB DAC Digital to Analog Converter, the DS-DAC. Phonon and the veteran japanese sound engineer Shinichi Akagawa teamed up to focus to produce the very best playback environment in your ears of the excellent sound quality of the DS-DAC. To achieve the best sound quality from your digital out or line out, the tuning was based on the SMB-02 taking into account the features and characteristics of the DS-DAC headphone amplifier. After repeated fine tuning over details such as sound absorption and cabling, the final tuned sound is the sound of the instruments played by the musicians. Company´s goal is to enjoy music even more, easily with the best quality!