Wooden Enclosure contributes to rich sound. Wooden Enclosure is highly rigid, reducing vibration and reverberation and faithfully reproducing the original sound in the low frequency range, with a natural tone unique to wooden materials. Aero-dynamic port produces clear, deep bass. The aero-dynamic port helps to deliver clear, deep bass. The DM502 provides clear, rich sound from bass to treble with a great interior structure. It is compatible with various sources.