Manufacturer: National Semiconductor  •  Series: Boomer®  •  Amplifier Type: Class AB  •  Output Type: 1-Channel (Mono) with Stereo Headphones  •  Max Output Power x Channels @ Load: 1.5W x 1 @ 4 Ohms; 60mW x 2 @ 32 Ohms  •  Voltage - Supply: 2.6 V ~ 5 V  •  Operating Temperature: -40°C ~ 85°C  •  Board Type: Fully Populated  •  Utilized IC / Part: LM4856  •  Supplied Contents: Board, Cable, Software