QSC PLX1804 Stereo Power Amplifier (600W/Channel @ 8 Ohms)

Model #PLX1804

Qsc plx1804 1
Qsc plx1804 1
Qsc plx1804 2
Qsc plx1804 3
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Packaging Info

Package Weight 22.0 lb
Box Dimensions (LxWxH) 24.0 x 18.3 x 5.9"

General Information

Input Sensitivity 1.20 Vrms @8 ohms
Input Impedance 20 kOhms, balanced10 kOhms, unbalanced
Gain 35dB (@8 Ohms)
Frequency Response 20Hz - 20kHz, -0.5dB
Signal-to-Noise Ratio -106dB, 20Hz - 20kHz
Total Harmonic Distortion (THD)
Input Connections 2 x XLR female, balanced2 x 1/4" TRS phone, balanced
Output Connectors 2 x NL-4 Speakon (both channels available on Ch.1 output)
Power Rating Rating @ 1 kHz, THD=0.1%900W @ 4Ω Stereo (per channel)600W @ 8Ω Stereo (per channel)Rating @ 20 Hz - 20 kHz, THD=0.05%800W @ 4Ω Stereo (per channel)550W @ 8Ω Stereo (per channel
Controls (Rear) 1 x Circuit Breaker
Indicators 2 x Ch.1,2 red Clip LEDs2 x Ch.1,2 green -10dB LEDs2 x Ch.1,2 green -35dB signal LEDs1 x blue Power LED
Cooling 1 x variable-speed fan (back-to-front airflow)
Power Consumption 1/8 power (pink noise)@8 Ohms: 5.7A/120V@4 Ohms: 9.4A/120V1/3 power (pink noise)@8 Ohms: 10.4A/120V@4 Ohms: 16.5A/120VFull Power@8 Ohms: 20A/120V@4 Ohms: 32A/120V
Power Requirements 120VAC
Dimensions 19 x 3.5 x 11" (483 x 89 x 279mm)
Weight 13 lbs (5.9kg)
Specialties Detented Level AttenuatorsComprehensive Protection CircuitryOn/Off Muting, DC-fault Power Supply Shutdown
Controls Front Panel 2 x rotary Level Control knobs1 x Power switch
Damping Factor >200
User Reviews
3 September 2008

I've owned a line of different amps and this by far is the best there is, it's quiet, clean sounding and just a overall power house. I use it to power my 2 mackie c300z main speakers and it's way more than enough power.

27 March 2011

QSC launches a high quality amplifier in the markets. The new QSC PLX-1804 Grey Amplifier is a latest device with advanced playback systems and brilliant connectors. This new amplifier features full short circuit, open circuit, thermal, infrasonic, ultrasonic and RF protection.

26 August 2008

This is one awesome amp. I have used other brands of amps for years that were much heavier , with much less power too. Very simple , very efficient ! What more do you want?

30 March 2007

Nice, smooth clean tone thoughout the power band. Quite nice.

Product Highlights
  • Rackmount Design
  • Drives 1 or 2 Speakers Per Channel
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