QSC EX4000 powered amplifier

Description

QSC EX4000 power amp. 1400 watts. Amp is fully functional and in Great condition, providing nice clean power for your PA speakers! It has minimal scuffs and scrapes on it from prior use, as pictured, but no such wear affects performance. Case not included.
Buyer to pay shipping & handling. Unit is heavy. Local pickup also available.
The QSC EX4000 amplifier provides 1,400 watts of output power a channel at 2 ohms and 800 watts a channel at 8 ohms. Distortion is less than 0.5 percent. A variable-speed fan keeps operations quiet and a built-in limiter lessens distortion. Also, the EX4000's thermal management system changes its fan speed to suit different heat exchanges, even reducing the gain to prevent overheating.
Specifically
The EX4000 protects itself from short-circuit, open circuit, ultrasonic and RF interruptions with its variable speed fan. Its has input ports for a barrier strip and XLR, as well as binding posts and Neutrik connectors for speakers. Different-colored LED lights (green, yellow and red) allow you to monitor power and temperature levels. It has an AC switch, two channels of gain knobs in the front, and a parallel/stereo/bridge switch in back.
More Features
The EX4000 has a damping factor of more than 200 and dynamic headroom of 3 decibels at 4 ohms. Noise level is 100 decibels below the standard output range of 20 Hz to 20 kHz. Input impedance is 10,000 balanced, 20,000 unbalanced. The system comes with a three-step output circuit for further heat control and less power consumption. It also has a parallel switch that also bridges with mono sound. Older-model signal processors are compatible with the rear panel architecture, as well as newer, computer-based sound applications.
SPECIFICATIONS
EX 4000 OUTPUT POWER {per channel) 8 ohms, 20 Hz to 15 kHz*, 0.1% THD: 720 W 8 ohms, 1 kHz, 1% THD: 800 W 4 ohms, 20 llz to 15 kHz*, 0.1% THD: 1100 W 4 ohms, 1kHz, 1% THO: 1200 W 2 ohms, 1 kHz, 0.1% THD, (±1 dB]: 1400 W EX 4000 OUTPUT POWER {bridged mono) 8 ohms, 20 Hz to 15 kHz*, 0.1% THO: 2200 W 4 ohms, 1 kHz, 0.1% THO, (±1 dB): 2800 WW
DISTORTION SMPTE-IM, less than 0.05 %.
FREQUENCY RESPONSE 20 Hz to 20 kHz, ±0.1 dB 8 Hz to 100 kHz, +0/-3 dB
DAMPING FACTOR Greater than 200
DYNAMIC HEADROOM 3 dB at 4 ohms
NOISE 100 dB below rated output (20 Hz to 20 kHz)
SENSITIVITY 1 Vrms for rated power (8 ohms)
VOLTAGE GAIN EX 2500: 63 (36 dB) I EX 4000: 80 (38 dB)
INPUT IMPEDANCE 10 kilohms unbalanced, 20 kilohms balanced
CONTROLS Front: AC switch, Ch 1 and Ch 2 Gain knobs (with 2 dB detents) Internal: Two DIP switches for parallelling inputs, two DIP switches for bridged output configuration
INDICATORS (each channel)
PWR-ON: Green LED
LEVEL -30: Yellow LED LEVEL -10: Yellow LED LIM-CLIP: Red LED TEMP-PROT: Red LED (flashes for over-temp)