Tramp's is one of the leading brands in car audio in the world. The MD Series amps are their latest models, with cutting edge technology to replace their best-selling HD Series, which are famous for being excellent with bass as well as with voice. Technical Specs: Operation Class: D Number of Channels: 01 Maximum Power: @ 12, 6 VDC - 2 OHMS: 3000W RMS @ 12, 6 VDC - 4 OHMS: 1920W RMS Signal to Noise Ratio: > 90dB Frequency Response: 10Hz - 18KHz (-3dB) Input Impedance: 22K Ohms Minimum Supply Voltage: 9 VDC Maximum Supply Voltage: 16 VDC Consumption at rest: 1. 00A Maximum Musical Consumption: 150A Maximum Consumption in Sinusoidal Signal: 300A Dimensions: 228 x 70 x 218 mm | 8. 98" x 2. 76" x 8. 58" Weight: 2. 5 Kg (5. 5 lbs.) Excellent for voice as well as bass 2 ohms 3000 watts Mono Bass boost