Features:
- PowerLight switch-mode power supply for highest efficiency and improved audio performance
- Flow-through air path and solid aluminum heat sinks for maximum cooling
- DataPort supports remote network control and monitoring via Q-SYS
- Detented gain controls with 1-dB steps for precise calibration
- Removable knobs with lock-out security plate to prevent unauthorized tampering
- User defeatable clip limiters and selectable low-frequency filter per channel (3 Hz, 30 Hz, or 50 Hz)
- Three selectable gain structures (26 dB, 32 dB, or 1.2 V)
- Front and rear panel LEDs indicate status of switch settings at a glance
- Parallel XLR/M and XLR/F connectors for simple loop-through connectivity
- Neutrik Speakon® and "Touch-Proof" binding post outputs
- Neutrik Powercon® power cable remains secure on the road
- Linear Class H output circuit offer double the typical efficiency of Class B, reducing AC current consumption and cooling requirements
PowerLight 3 Series is comprised of "Ultimate Analog" power house amplifier, designed for the most demanding concert and live-sound reinforcement applications. The PL380 features the ground breaking PowerLight™ power supply technology, dramatically reducing weight, eliminating AC mains hum and improving audio quality. Comprehensive remote control and monitoring can also be achieved via the Q-SYS networked platform.
- Class D topology provides efficient performance at extreme power loads
- Three-position Input Sensitivity switch ensures gain-matching with existing amp racks and power systems
- User defeatable clip limiters and selectable low-frequency filters (30 Hz, 50 Hz, Bypass)
- DataPort connection supports external amplifier control and monitoring via Q-SYS
- XLR and Block Input connectors and Binding post or Neutrik speakON® Output connectors
- Comprehensive internal protection protects amplifiers and loudspeakers against over-current, over-temperature and clipping - without compromising program signal
The PowerLight™3 Series is designed for the most demanding live audio users, whether in touring rigs or fixed installations. The most requestedfeatures of the PowerLight 2 series have been upgraded to deliver "the ultimate analog amplifier", while the QSC DataPort ensures full compatibility with advanced digital processing and QSControl.net™. Three models range in power from 1250 watts to 4000 watts per channel attwo ohms, all in two-rack space chassis that are only 15.6" (40 cm) deep and 22 lb (10 kg).
In addition to higher power, the PowerLight 3 Series offers higher input voltage, selectable sensitivity, and easily adjusted rear panel switcheswith color coded LED indicators. For those users who simply want a high performance amplifier to go with their existing processor or console, thePowerLight 3 Series is an ideal choice, offering high power, excellent value, and zero signal latency. When complete integration of amplifiercontrol, monitoring and DSP is desired, the PowerLight 3 Series is fully compatible with the QSControl.net™ BASIS™ networked audio platform,with its comprehensive drag and drop DSP functionality. Simpler DSP requirements can be met with the DSP-4 processing module.
The flagship of the PowerLight 3 Series is the 8000 watt PL380. This highly refined, all-switchmode amplifier incorporates nearly 40 yearsof QSC engineering experience, resetting expectations for Class D audio quality. The PL380 combines a pair of 4000 watt Class D amplifierchannels with the well proven PowerLight supply, to deliver more than twice as much audio power as previous 2 rack unit PowerLight amplifiers.Reactive "back EMF" from the speaker is recycled to the power supply, and unmatched "plug-to-plug" efficiency of 85% keeps AC power needsto a minimum, while delivering more energy to the speaker.
Years of patient development have resulted in outstanding 20 Hz - 20 kHz audio performance, plus complete protection from normal hazards of the trade. Even simple features such as dependably silent, surge-free on-off switching indicate the special care taken to keep things safely under control. The most pronounced "sonic signature" of the PL380 is one of immense headroom, sailing through even the most difficult loads with no signs of stress or change of tonality.
For lower power applications, the PL325 and PL340 offer the same feature set, matched to upgraded versions of QSC's most advanced linearamplifier platform. Recent advances in power supply capacitors further improve power and low-impedance performance, while continuing tooffer the best available audio performance. As a result, designers have the choice of running a single type of amplifier throughout their rig, ormatching amplifier performance to specific transducer types.
In keeping with normal QSC design standards, back-to-front airflow provides up to twice as much long-term average power as most competitors, without dumping hot air into the rack. All PowerLight 3 models are built in the same chassis size, with common back panel layouts to facilitate easy racking and hookup.
For more information, please see 
Data Sheet and User Manual
