Supplier & Manufacturer Of Professional Audio Amplifiers We mainly OEM amplifier with your logo Premium Sound Quality Affordable Price, Quality Power AmplificationQuality Toshiba Transistors & ComponentsCE, RoHS CCC Certification products Features Flow-through ventilation from front to back150W-1100W power area at 8ohms Dual fans for proper cooling to maintain proper internal operating temperatureHigh power toroidal transformerInternal heat sinks with forced air cooling for rapid, heat dissipationAmplifier is noise freeCA series provide extensive protection features such as overhead short currents, DC protection, zero current, clip limiter, soft start CA 20 Class H Professional Power Amplifier 3 Step CA 18 Class HProfessional Power Amplifier 2 StepCA Series Professional Audio AmplifierModelCA2CA4CA6CA9CA12CA18CA20Stereo Power8Ω150W250W400W520W800W1100W1300WStereo Power4Ω225W275W600W780W1200W1800W1950WStereo Power2Ω270W500W800W1040W1600W2200W2600WBTL 8Ω450W750W1200W1560W2400W3600W3900WBTL 4Ω540W1000W1600W2080W3200W44005200WFrequency Response 20Hz - 20KHz +0/-0.3dBTHD+N <0.03%@8Ω 1KHzS/N Ratio>90dB>90dB>95dB>95dB>93dB>93dB>93dBSlew Ratio20V/ u S20V/ u S30V/ u S30V/ u S40V/ u S44V/ u S44V/ u SDamping Factor>400>400>400>400>300>300>300Crosstalk >70dB@8Ω 1KHzInput Impedance 20KΩ(Balance)/10KΩ(Unbalance)Input Sensitivity 0.775V/1.0V/1.4VProtection FeaturesOverheat short circuits,DC,limit and--softstart,Outputrelay-Zero Current Switch,Intellctual Clip limiterHeight2U2U2U2U3U3U3UGross Weight21.25KG23.75KG25KG27KG42.5KG43KG47KGPacking Dimensions 590×570×150MM650×585×200MM How to inquire about our products David Liong Sales Manager Choose one of the following options: Trade Manager Click the"I'm online chat now" to chat with me in real time right now using Alibaba's applicationTrade Manager or Enter a Message Leave a message below saying which product you are interested in to Mr.David with your MSN, Yahoo or email and a sales representative will get back to you as soon as possible or Give us a call Mobile (David Liong): 86 13827095799 Land line: 86-750-782-1211 Fax : 86-750-781-3277Dual fans for proper cooling to maintain performance and proper performance levels