• Flexible Amplifier Summing Technology™ (FAST) drives most any loudspeaker system or configuration by distributing total amplifier power across one, two, three, or all four channels.
  • Four channels of full function onboard loudspeaker DSP with crossover and parametric EQ filters, limiting and alignment delay eliminate the need for outboard loudspeaker processors.
  • E Series Entertainment System DSP Tunings are now available for PLD processing amplifiers:

             - Visit the Amplifier Navigator Software to download and update

  • Powerful Intrinsic Correction™ processing maximizes the sonic performance of QSC loudspeakers.
  • 20 factory preset configurations that can be modified and stored in the 50 user presets.
  • PowerLight universal switch mode power supply with PFC for highest efficiency, improved audio performance, and low weight.
  • Four Input XLR connectors and six NL4 output connectors.
  • Integrated front panel with channel Select and Mute buttons, input and output LED metering, 400×240 LCD, intuitive navigation buttons, LED power button and indicator, and cast aluminum handles.
  • Preset Wizard simplifies amplifier configuration, providing selection from a list of the top selling passive loudspeakers.

Power Specifications

 Peak ContinuousPeakContinuousPeakContinuous
4 Independent Channels
A, B, C, D

500 W400 W900 W625 W1200 W1150 W
 4Ω700 W400 W1400 W625 W2000 W1250 W
 2Ω625 W 325 W1200 W625 W1600 W625 W
2 Channel BTL Bridged
A+B or C+D 
Doubles Voltage

1200 W800 W2400 W1250 W4000 W2250 W
1500 W600 WNR*NR*NR*NR*
2 Channel Parallel
AB or CD 
Doubles Current

500 W400 W1300 W1150 W1250 W1150 W
950 W800 W2000 W1250 W2400 W2250 W
1200 W800 W2500 W1250 W4000 W2100 W
1 Channel 3CH Parallel
Triples Current

500 W400 W1400 W1150 W1400 W1150 W
950 W800 W2400 W2000 W2500 W2400 W
1800 W1200 W3500 W2500 W4500 W4100 W
1 Channel Bridged/Parallel
Doubles Current and Voltage

1600 W1500 W3500 W2500 W4500 W4200 W
2500 W1600 W5000 W2500 W7500 W4200 W
1 Channel 4CH Parallel
Quadruples Current

500 W400 W1400 W1150 W1600 W1150 W
1000 W800 W3000 W2500 W3000 W2300 W
1700 W1600 W5000 W2500 W5300 W4200 W

NR* = Not Recommended due to excessive current draw
BOLD = Optimal configuration fo rthe load and channel count

Controls, Indicators and Connections

Controls and indicators (front)Power  • Channel MUTE Buttons • Channel SELECT buttons • Channel input signal and CLIP LED indicators • Channel output and LIMIT LED meters • HOME, ENTER, EXIT, GAIN navigation buttons • Control knob
Controls and indicators (rear)AC Power Disconnect

Input connectorsFemale XLR
Output connectors  NL4

Weights and Dimensions

Dimensions (HWD) inches3.5 x 19 x 123.5 x 19 x 163.5 x 19 x 16
Dimensions (HWD) mm89 × 482 × 30589 × 482 × 40689 × 482 × 406
Weight, Net / Shipping18.5 lb (8.4 kg) / 22 lb (10.0 kg)21.0 lb (9.5 kg) / 25 lb (11.3 kg)22.0 lb (10.0 kg) / 26 lb (11.8 kg)
Agency approvalsUL, CE, RoHS/WEEE compliant, FCC Class A (conducted and radiated emissions)
Carton contentsLocking IEC cable, Quick Start Guide, USB cable


All specifications are subject to change without notice.

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  • Brand: QSC
  • Product Code: PLD4.3
  • Availability: Contact for availability
  • R27,480.00

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