Amplifier, PA Amplifier, Professional Amplifier, karaoke Amplifier, Audio, PA Audio, Professional Audio, Audio System, Karaoke Audio, Mixer, PA Mixer, Professional Mixer, Karaoke Speaker. Features: 1. The power is soft to start 2. Bridge/Stereo transfer output 3. Can switch 150Hz low frequency output, 4. Protection functions: Over-flow, over-heat, over-load, and short-circuit 5. High Performance DC Fans 6. High Efficiency And Low Emission , Toroidal Transformer Specifications: Model: CA2, CA4, CA6, CA9, CA12, CA18 8Ω Stereo Power CA2: 150W; CA4: 250W; CA6: 400W; CA9: 520W; CA12: 800W; CA18: 1200W 4Ω Stereo Power CA2: 225W; CA4: 375W; CA6: 600W; CA9: 780W; CA12: 1200W: CA18: 1800W 8ΩBridge Power CA2:450W; CA4: 750W; CA6: 1200W; CA9: 1560W: CA12: 2400W; CA18: 3600W Freq.Resp(+0/0.31W/8Ω 20Hz-20KHz, -3Db/100KHz 20Hz-20KHz(+0/0.5dB) THD+N CA2<0.03%; CA4 <0.03%; CA6 <0.03%;CA9 <0.03%; CA12 <0.03%; CA18<0.03% Slew Ratio CA2: 20V/us; CA4: 20V/us; CA6: 30V/us; CA9: 30V/us; CA12: 40V/us; CA18: 44V/us Damping Factor CA2: 400; CA4: 400; CA6: 400; CA9: 400; CA12: 300; CA18: 300 S/N Ratio CA2>90dB; CA4 >90dB; CA6 >95dB; CA9>95dB; CA12>95dB; CA18>95dB Input Sensitivity 0.775V,1V,1.4V Input Imped.(bal./unbal.) 20K&Omega;/10K&Omega; Protection: Overheat, Short circuit, DC, limit and soft-start, Output Rely &mdash;Zero Current Switch, Intellectual Clip Limiter Crosstalk >70dB Gross Weight CA2: 21.25KG; CA4: 23.75KG; CA6: 25KG: CA9: 27KG; CA12: 44KG; CA18: 47KG Dimensions(CM) CA2, CA4, CA6, CA9: L59cm &times; W57cm &times; H15cm CA12, CA18: L65cm &times; W58.5cm &times; H22cm Currency: USD Unit Price: 1500 Quantity: unit Delivery: within one month