30 W plus 30 W (8Ω) high-quality hi-fi Class D amplifier. Enter the smartphones and digital audio players of the sound source, you can play a high-resolution sound source. Mechanical vibration is not easily transmitted to the board since the amplifier board firmly fixed by aluminum body. The heat dissipation of Class D amplifier LSI will be done by the radiation rod which is arranged on the back side of the upper parts. While cooling the heat is allowed to transfer and heat dissipation works from the heat sink of the top plate. It becomes possible to exert a stable amplified output performance in this structure.