C-Mark DA multi-channel amplifier is actually made by putting in 2 or 3 units ofmini digital amplifiers into one rack, so every two-channel of the DA amplifier has individual power supply and individual power switch and can be turn on/off individually. Also the output power of every two-channel can be different and beflexibly chosenamong 200W x 2, 300W x 2, 400W x 2 and 600W x 2. To combine various output power into one amplifier, there are more than dozens of models in the DA series multi-amplifiers to meet requirements of various applications. DA6600 key Specification: Output Power 8Ω/1KHZ 6 x 300W 4Ω/1KHZ 6 x 600W Bridged8OHM/1KHZ 3 x 1000W Input sensitivity 0DB Input impedance 20KΩbalance10KΩunbalance Frequency response 20-20KHZ@8OHM THD+N 0.01%(1KHZ,1W) S/N 110DB(A weighted) Power supply AC110V/220Von option Fuse tube current 12A 110VAC / 6A 220VAC DA4623 key Specification: Output Power: 8Ω/1KHz 4x300W + 2x150W 4Ω/1KHz 4x600W + 2x300W Bridged 8OHM/1KHZ: 2x1000W + 1x500W Input sensitivity: 0dB Input impedance: 20KΩ balance / 10KΩ unbalance Frequency response: 20-20KHz @ 8ohm THD+N: 0.01%(1KHZ,1W) S/N: 110dB(A weighted) Power supply: AC 110V or 220V on option Fuse tube current: 12A AC110V or 6A AC220V Digital amp adopts Switch Mode Power Supply, with open choices of 110±10% or 220±10%. DA digital amplifier brings you the possibility of recreation of live sound reinforcement art. Its design of multi-channel allows you to make an audio reinforcement matrix easily, making point sound source to area source of sound, which is perhaps what you have never done before. DA digital amplifier provides you the reliability in live sound reinforcement, and the design of high power switch mode power supply ensures reliability in any applications. DA digital amplifier provides you high-efficiency; the conversion rate is up to 95% and the overall efficiency is up to 70%. High-efficiency and evergy-saving are great features in today's pro audio market. DA digital amplifier features portability, and its design of super light weight overthrows traditional concept, represents fashion and dream, and reduces your workload. DA digital amplifier provides You hi-fi amplifying function. Its unique resolution design can bring you confidence to tell craft brothers and customers that your choice is professional, fashionable, and right.