The 4-channel CX404 250W power amplifier from QSC gives you four channels in only two rack spaces, without compromising on power. With high output power, versatile loading options, high thermal capacity and unmatched reliability, the CX Series is the perfect solution to any permanently installed sound system. With PowerWave technology, CX amplifiers take your sound to a whole new level. Not only does it give you tighter bass and clean transparent highs, PowerWave also cuts waste heat, boosts reliability and gets rid of unwanted noise and hum. PowerWave is a revolutionary switching power supply technology that provides ample current to the audio power circuitry by charging the supply rails 230,000 times a second through an ultra-low impedance circuit. So unlike amplifiers that use conventional supplies, the audio signal is never starved prematurely and remains crisp and clean. FEATURES * 250W @ 8 Ω stereo, 800W @ 8 Ω bridged * PowerWave technology delivers tighter bass and cleaner highs * 1 dB detented gain controls * HD-15 DataPort connector for QSControl computer control * XLR and detachable Euro-style input connectors SPECIFICATIONS * Power Ratings: * 8 Ω, Stereo Mode, Both Channels Driven: 250W * 4 Ω, Stereo Mode, Both Channels Driven: 400W * 2 Ω, Stereo Mode, Both Channels Driven: not recommended * 16 Ω, Bridged Mono Mode: 500W * 8 Ω, Bridged Mono Mode: 800W * 4 Ω, Bridged Mono Mode: not recommended * Input Impedance: 6 kΩ unbalanced, 12 kΩ balanced * Input Connectors, each channel: 3 position Euro-style detachable barrier block, Ch 1, 2, 3 and 4 * DataPort: HD-15 Connector, Ch 1+2, 3+4 * Output Connectors, each channel: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4 * Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic and RF protection. Stable into reactive or mismatched loads * Load Protection: On/Off muting, DC-fault power supply shutdown * Dimensions (W x H x D): 19" x 3.5" x 14" (2 U) * Weight: 21 lbs. net, 27 lbs. shipping