12V AC/DC Adapter Class-T Circuit Design Microphone Input Jack Speaker Impedance: 2-8Ω 3.5mm iPod/MP3 Input Jack Signal to Noise Ratio: >80dB Total Output Power: 90 Watt Input Power: DC 9 ~ 14.4V 2A Total harmonic distortion: <0.4% Frequency response: 20Hz-20kHz Short Cut Overload & Overheat Protection Dimensions: 6.02'' x 4.96'' x 1.5''
