Product parameters: Output power: 0.5W~3W; Mono Load: 4~8ohm; Voltage: DC 2.7V~5V; Bandwidth: 20Hz~20KHz; Distortion: 1KHz 0.1%; Scope of application: speaker products digital products computer products audio output of the box for toys music box; Product features: JF-0501MA power amplifier board is playing board a smaller ultra thin very convenient small gaps in the smaller box or other equipment specially designed for all kinds of plush dolls toys audio amplification products mainly has the advantages of small size high power good sound quality etc.