(Missing cover plastic piece only cosmetic)The Sony XM-GS100 Monoblock Subwoofer Class D Stereo Power Amplifier in black offers powerful mono playback with 330W RMS power output. Made in Thailand, this amplifier is designed by Sony to deliver high-quality sound and performance. Perfect for adding a deep bass boost to your car audio system, this amplifier is a reliable and efficient choice for audiophiles looking to enhance their listening experience.