This SKP Pro Audio SM33 iUSB Sound Board is a versatile and powerful unit that allows you to easily distribute and amplify your audio signals. With support for modes such as CW, FM, and AM, this unit is perfect for a wide variety of audio applications. The unit features Dolby Atmos, Dolby Digital, and other surround sound formats, as well as analog and digital inputs, including coaxial digital, AUX, and coaxial RF/F-type. The SM33 also features multiple audio outputs including digital coaxial RCA, DIN, and banana speaker jacks, all with AB amplifier class. This black unit has 4 channels and 3 inputs, making it a great choice for home audio and consumer electronics setups. With a power output of 220 W, you can be sure that your audio will sound great.