The GX Series is the latest in a long line of hard-working, low cost amplifiers,
designed to produce the best possible results for a wide range of users.

Power levels matched to the most popular speakers. Inputs: XLR, 1/4″ TRS and phono. Outputs: Speakon combo and binding posts.

Power levels matched to the most popular speakers used by entertainers

Optimized for maximum real-world headroom into 4- and 8-ohm speaker systems

Inputs: XLR, 1/4″ TRS and phono input connectors for compatibility with any source

Outputs: Speakon combo accepts 1/4″ (TS) plugs or Speakon 2– and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems

Minimum depth chassis (10.1″ / 257 mm) fits in compact, inexpensive effects racks

Lightweight – GX3 and GX5 less than 26 lb (12.5 kg). GX7 only 15.5 lb (7 kg)*

Detented gain controls for precise setting and matching of sensitivity

GuardRail automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show

Front panel LEDs monitor power, signal, and clipping

Subwoofer/satellite crossover built-in

8 ohms / 1 kHz (both channels driven) 725 W

8 ohms / 1 kHz (single channel driven) 800 W

4 ohms / 1 kHz (both channels driven) 1000 W

4 ohms / 1 kHz (single channel driven) 1200 W

Distortion (1 dB below rated power, 1 kHz) 8 ohms: less than 0.02% 4 ohms: less than 0.05%

Signal to Noise (20 Hz – 20 kHz) 100 dB

Input Sensitivity 1.2 V rms

Voltage Gain 36.1 dB

Output Circuitry 2-tier Class H

Power Requirements (1/8 power, pink noise at 4 ohms, 120V) 10.1 A

Frequency Response 20 Hz–20 kHz, +0, -1 dB

The GXD amplifiers have an LCD for control and monitoring, with three buttons for menu navigation, and two knobs for adjusting parameters. There are 20 User Presets that can be edited, stored and recalled to match any configuration or system.

Each channel has parallel XLR and 1/4” TRS connectors for inputs. The outputs are professional NL4 and binding post connectors for mono and bi-amp speaker connectivity. You can keep your amplifier up-to-date with software updates using the USB connector

High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.

Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4 ohm and 8 ohm speaker systems.

Class D output stage with a universal power supply for high performance and efficiency.

Extensive and powerful loudspeaker processing built in. Includes high and low-pass filters, 4-band parameteric EQ, limiting, and delay.

Large LCD display simplifies amplifier setup and indicates amp status.

Inputs: Parallel XLR and 1/4” TRS connectors for compatibility with any source while providing convenient loop-thru capability.

Precision rotary encoders for gain and DSP parameter control.

Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.

Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive.

Adjustable speaker protection to match your loudspeaker’s power and impedance.

Front panel LEDs indicate signal presence, input overload, and amplifier clipping.

8 ohm dynamic, both channels driven 1500 watts per channel

4 ohm dynamic, both channels driven 2250 watts per channel

8 ohm continuous, both channels driven 800 watts per channel

4 ohm continuous, both channels driven 1200 watts per channel

Distortion (typical) 1 kHz at full rated power < 1% THD

Signal to Noise (A weighted, 20 Hz–20 kHz) 100 dB

Input Sensitivity 1.2 Vrms, 3.9 Vrms

Maximum Voltage Gain 36.5 dB

Output Circuitry Class D

Power Requirements 1/8 power at 4 ohm

With four flexible channels of up to 2000 watts each, lightweight PowerLight universal power supply, DSP on-board for each channel, and all the right connectors, the PLD4.5 is ideal for production and live sound applications.

Built for system integrators, the PLD series amplifiers provide multi-channel amplification with built-in DSP and enough power to drive wide varieties of speaker systems with optimal energy efficiency. The PLD Series consists of three light-weight, 2RU, four-channel amplifiers with on-board DSP and flexible channel combining. These amplifiers not only provide the power and processing to make your system perform better, they offer outstanding efficiency ensuring that energy costs are kept to a minimum over the life of the installation.

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.

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.

Typical Distortion 0.01–0.06%

Maximum Distortion 1.0%

Frequency response 20 Hz–15 kHz ±0.2 dB, 20 Hz–20 kHz +0.2/-0.7 dB

Noise: Unweighted Output Unmuted -101 dB

Noise: Weighted Output Muted -109 dB

Gain 1.2V / 38.4 dB

Damping factor >150

Input impedance >10 k ohm, balanced or unbalanced

Maximum rms input level 3.9V / 12.28 V (+24 dBu), 1.2V 3.88 V (+14 dBu)

Amplifier and load protection Short circuit, open circuit, thermal, RF protection. on/off muting, DC fault shutdown, active inrush limiting, input current limiting

AC Power Input 4.2: Universal Power Supply 100-132/200–240 VAC, 50–60 Hz
4.3/4.5: Universal Power Supply 100–240 VAC, 50–60 Hz

The PLX2 Series is a range of premium quality, highpower amplifiers designed for the most demanding live performance uses. Built on the third generation of QSC PowerLight technology, PLX2 amplifiers combine lightweight, superlative audio quality and proven QSC reliability. With power output up to 3600 watts, PLX2 amplifiers are capable of providing ample clean, undistorted output to the most power hungry speaker systems.

Very light weight (“02” models, 21 lb / 9.5 kg, “04” models 13 lb / 5.9 kg).
Cooling design exhausts hot air out the front, keeping the rack cool. Flow-through heat sinks require no filters that could become clogged.

Front panel LED power, clip, -10 dB, and signal present indicators for system monitoring and troubleshooting. 02 models also feature bridge and parallel mode LED indicators.

Two Speakon NL4 output connectors provide positive-locking speaker connections. Upper connector provides both channel outputs on all four poles (Channel 1: 1+, 1-; channel 2: 2+, 2-) for bridged mono or for single-cable connection to bi-amplified speakers.

21-position front-panel gain controls for precise, repeatable amplifier adjustment. Balanced XLR inputs with parallel TRS connectors accommodate all common input connectors and support loop-through operation.

Patented PowerLight power supply technology with other patents pending.

Rated Power per Channel, Stereo Mode (both channels driven)*

8 ohm FTC 20 Hz–20 kHz 0.05% THD 725 W

8 ohm EIA 1 kHz 0.1% THD 775 W

4 ohm FTC 20 Hz–20 kHz 0.05% THD 1100 W

4 ohm EIA 1 kHz 0.1% THD 1250 W

2 ohm EIA 1 kHz 1% THD 1800 W

Rated Power, Bridge-Mono Mode*

8 ohm 20 Hz–20 kHz 0.1% THD 2500 W

8 ohm EIA 1 kHz 0.1% THD 2600 W

4 ohm EIA 1 kHz 1% THD 3600 W

Signal to Noise (20 Hz–20 kHz) -107 dB

Input Sensitivity at 8 ohm 1.25 V rms

Maximum Voltage Gain 36 dB

Output Circuitry 2-tier Class H

Power Requirements (1/8 power, pink noise at 4 ohm) 11.5 A /120V

With PowerLight switch mode power supply, 2500 watts per channel into 4 ohms and super-efficient class D topology, the PL380 is ideal for live sound / production applications.

The PowerLight 3 Series is designed for the most demanding live audio users, whether in touring rigs or fixed installations. The most requested features 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 at two ohms, all in two-rack space chassis that are only 15.6″ (40 cm) deep and 22 lb (10 kg).

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

3 year warranty, plus optional 3 year extended service contract

Linear Class H output circuit offer double the typical efficiency of Class B, reducing AC current consumption and cooling requirements

OUTPUT POWER PER CHANNEL, STEREO MODE, both channels driven

8 ohm EIA 1 kHz 1% THD – 1500 W

4 ohm EIA 1 kHz 1% THD – 2500 W

2 ohm EIA 1 kHz 1% THD – 4000 W*

OUTPUT POWER, BRIDGE MONO MODE

8 ohm EIA 1 kHz 1% THD – 5000 W

4 ohm EIA 1 kHz 1% THD – 8000 W*

Typical Distortion

(20 Hz–3 kHz, 3 dB below clip, or 20 Hz–5 kHz, 10 dB below clip, or 20 Hz–20 kHz, 20 dB below clip)

8 ohms – 0.01-0.03%

4 ohms – 0.03-0.06%

2 ohms – 0.1%

Maximum Distortion(20 Hz–20 kHz, 1 dB below rated power) 4 to 8 ohms – 0.2%

Frequency Response (8 ohms) – 20 Hz–20 kHz, ±0.2 dB

Noise (20 Hz–20 kHz, 32 dB Gain) – -104 dB

Dynamic Headroom (4 ohms) – 2 dB

Damping Factor (8 ohms) – 200

Output Circuitry – Class D

Input Sensitivity

26 dB Setting – 5.27V

32 dB Setting – 2.67V

Maximum Gain (1.2V setting) – 39.1 dB

Maximum Input Level

1.2V setting – 10 V (+22 dBu)

32 dBu setting – 22 V (+29 dBu)

26 dBu setting – 25 V (+30 dBu)

AC Power Requirements

120V 50/60 Hz – 18 A

230V 50 Hz – 11 A

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. Three 2-rackspace models range in power from 430 to 1200 watts per channel at 2 ohms. Two 3-rackspace models provide 2000 to 2500 watts per channel at 2 ohms. All five models feature a compact chassis less than 16” deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4” balanced inputs, Speakon and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

Compact size — up to 2500 watts in two rack spaces, or 5000 watts in three rack spaces

High-current toroidal transformers, for greater 2-ohm power and low noise

Independent user-defeatable clip limiters reduce distortion

Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom

The 4000-watt RMX4050a operates on a standard 15 amp plug (120V)

Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance

The RMX4050a‘s particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.

Balanced 1/4” (6.3 mm) TRS, XLR, and barrier strip inputs

Touch-proof binding post and Neutrik Speakon outputs

Front mounted gain controls for easy access

Signal and clip LED indicators for monitoring performance

Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers

3-year warranty plus optional 3-year extended service contract

8 ohm, FTC 20 Hz–20 kHz, 0.1% tdD 1050 W

8 ohm, EIA 1 kHz, 0.1% tdD 1100 W

4 ohm, FTC 20 Hz–20 kHz, 0.1% tdD 1600 W

4 ohm, EIA 1 kHz, 0.1% tdD 1800 W

2 ohm, FTC 20 Hz–20 kHz, 1% tdD 2000 W

2 ohm, EIA 1 kHz, 1% tdD 2500 W

Power, Bridge-Mono Mode

8 ohm, FTC 20 Hz–20 kHz, 0.1% tdD 3200 W

8 ohm, EIA 1 kHz, 0.1% tdD 3600 W

4 ohm, EIA 1 kHz, 1% tdD 5000 W

Signal to Noise (20 Hz–20 kHz) -100 dB

Distortion (SMPTE-IM) < 0.02%

Input Sensitivity at 8 ohm 1.42V (+5.3 dBu)

Voltage Gain 64x (36 dB)

Output Circuitry 3-tier Class H