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QSC PLD4.3 4-Channel 4000W Power Amplifier with Built-in DSP


The QSC PLD4.3 is a high output professional 4-channel power amplifier with built-in DSP. The PLD4.3 combines QSC's years of experience in amplifier design and reliability with the absolute latest in Class-D output and digital signal processing technology. This makes the PLD series the best of the best for portable and production amplifier applications.
List Price: $1,999.99
Sale Price: $1,649.99

QSC PLD4.2 Features Include:

Image showing the rear of the QSC PLD4.3 chassis.
  • Up to 5000W of power when driving a single 4Ω load
  • Unique Class-D design topology uses up to 5.3A of AC current @ 120V under normal usage.
  • Realtime monitoring of incoming AC voltage and current draw on front LCD display
  • 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.
  • 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.
  • Closeup of the QSC PLD series amplifier's LCD display.
  • Integrated front panel with channel Select and Mute buttons, input and output LED metering, 400240 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.
QSC PLD4.3 Technical Specifications
4 Channels  
900W Burst, 625W Continuous
1400W Burst, 625W Continuous
1200W Burst, 625W Continuous
2 Channels  
2400W Burst, 1250W Continuous
2000W Burst, 1250W Continuous
2500W Burst, 1250W Continuous
1 Channel  
3500W Burst, 2500W Continuous
5000W Burst, 2500W Continuous
3500W Burst, 2500W Continuous
Distortion (typical)
1 kHz at full rate power
< 1% THD
Frequency Response (20Hz to 20kHz) -0.7 dB to +0.2dB
Damping Factor >150
Maximum Input Level +24 dBU
Dimensions (H x W x D) 3.5" x 19" x 16"
Net Weight 21 lbs.
Shipping Weight 25 lbs.