Output Power 30 x 2 Watts - Microphone Input Jack.Class T Circuit Design - Short Cut, Overload, Overheat Protection.Can Use For Car And Home - Dimensions: 5.51-Inch x 4.80-Inch x 1.81-Inch.12v,2a Ac/Dc Adapter.3.5mm IPod/Mp3 Input Jack The PFA200 is a small digital amplifier that packs a huge punch. It outputs 30 W over each channel for a total of 60 W maximum. The class T amplifier design is the latest in amp technology, utilizing digital signal processing for the highest quality signal. It works via a 12 V AC/DC adaptor. Input your audio via the 3.5mm iPod/aux-in jack or use the microphone input jack. Short, overload, and overheat protection keep your equipment secure and working hard.