Crown DCI4X600 4 Channel 600W Analog Power Amplifier Compact Energy Efficient The DriveCore? Install series amplifiers is a complete line of high performance installation amplifiers based on the proprietary DriveCore technology. DCi Series amplifiers are designed, engineered and manufactured to the industry?s highest quality standards, and provide system integrators with the advanced features and flexibility required for challenging 21st century installed sound applications. Versatile, compact and highly energy-efficient, DCi Series amplifiers continue the unbroken Crown tradition of leadership in professional and commercial power amplifier technology. Features TRUE RACK DENSITY ? Power points of 300W or 600W in 2-/4-/8-channel configurations ? all in a 2 Rack Unit form factor. More channels in one box allow smaller infrastructure rooms that can reduce operational costs while giving you the utmost in installation flexibility. DIRECT DRIVE CONSTANT VOLTAGE ? Save money by using smaller gauge wiring to drive the speakers using either 70V rms or 100Vrms. With no need for a step-up transformer at the output, the DCi produces higher audio quality much more efficiently. CHANNEL INDEPENDENT HI-Z/LOW-Z SELECTION ? Drive either one or two speakers in low-Z mode, or literally hundreds of speakers in high-Z mode (70Vrms or 100Vrms). This means better design flexibility since DCi powers all loads on a channel-by-channel basis. BRIDGEABLE CHANNEL PAIRS ? Unlike amps from other manufacturers, the DCi Series channels are bridgeable ? even in 100Vrms mode ? which means even more adaptability for higher power applications such as subwoofers. REMOTE ON/OFF INTERFACE ? Save power by integrating the amplifier into a control system so you can easily turn it on and off. EFFICIENT COOLING DESIGN ? Highly efficient internal cooling fans provide airflow to the most heat-generating parts. Incorporating the fans into the amplifier brick design maximizes cooling while minimizing wasted energy and noise. ADVANCED POWER FACTOR CORRECTION (PFC) UNIVERSAL POWER SUPPLY ? The most advanced power supply in an installation amplifier delivers power more efficiently in almost any condition than anyone else, resulting in less power dissipated and less heat in your racks. Specifications Frequency Response (8?, 20Hz - 20kHz): 0.25dB Signal To Noise Ratio (A-weighted): 108dB Total Harmonic Distortion (at full rated power, 20Hz - 20kHz): 0.35% Voltage Gain: 34dB Damping Factor (20Hz to 100Hz): 1000 Input Impedance (nominal balanced, unbalanced): 10k?, 5k? Maximum Input Level before Compression: +20dBu Maximum Input Level before Clipping: +26dBu Load Impedance (Stereo/Dual Mode): 2? - 16?; 70Vrms and 100Vrms Load Impedance Bridge Mono: 4? - 16?; 140Vrms and 200Vrms Cooling: Continuously variable speed forced air, front to back airflow Maximum Fan Noise (re dBA SPL @ 1M): 45 Required AC Mains (10%): 100V-240V ~ 50/60Hz Power Connector: 15A IEC Dimensions: 19" x 3.5" x 14.25" (48.3cm x 8.9cm x 35.63cm) Weight: 20.1lbs (9.12kg) Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping -Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - International Sales Clearance items, Custom Builds, Road Cases, DT12 items, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, turntable cartridges, fog fluid