QXD-1K

4 x 250W DSP Enabled Power Amplifier

The QXD1K is a compact 1RU, 4 x 150W Class-D amplifier with bridged output options up to 2 x 300W, including 70V/100V operation. Featuring UMAC™ Class-D technology, it delivers ultra-low distortion, high efficiency, and low power consumption. Optimised for fixed installations, it includes 32bit/96kHz DSP with FIR/IIR filters, peak and RMS limiters, and Quest speaker libraries. A front-panel TFT display, RJ45, and GPIO provide intuitive control and monitoring. Dante™/AES67 compatibility is available via optional expansion. With advanced protection, fan-forced cooling, universal mains, and standby power under 0.5W, the QXD1K is a robust, network-ready amplifier for professional AV environments.

Key Specifications:

Channels: 4 x 150W (Low-Z), 2 x 300W (Bridged for Low-Z, 70V, or 100V)
DSP: 32bit/96kHz FIR/IIR Filters, Limiters, Speaker Libraries
Mounting: 1RU Rack
Control: RJ45 & GPIO, Front TFT Display
Options: Dante™/AES67 Expansion Card

SPECIFICATIONS

POWER

NORMAL OPERATION (PEAK)					Bridged-Mono Mode (PEAK)
Load	Total Power	8Ω	4Ω	70V	100V	8Ω	4Ω	70V	100V
Maximum Dynamic Power (@1kHz, 1% THD)	1000W	4 x 250W	4 x 250W	N/A	N/A	2 x 500W	2 x 500W	2 x 500W	2 x 500W

NORMAL OPERATION (RMS)					Bridged-Mono Mode (RMS)
Load	Total Power	8Ω	4Ω	70V	100V	8Ω	4Ω	70V	100V
Maximum Continuous Power (@1kHz, 1% THD)	600W	4 x 150W	4 x 150W	N/A	N/A	2 x 300W	2 x 300W	2 x 300W	2 x 300W

I/O

OUTPUT CIRCUITRY	UMAC™ Class-D – full bandwidth PWM modulator with ultra-low distortion
OUTPUT CHANNELS	Four Speaker Level Output via 2-pin Euroblock/Phoenix connector with 5.08mm pitch and screw-lock
INPUT CHANNELS	Four Balanced Line Level Inputs via 3-pin Euroblock/Phoenix connector with 5.08mm pitch and screw-lock
DEFAULT GAIN	25dB
FREQUENCY RESPONSE	20Hz - 20kHz (±0.25dB), 4Hz - 40kHz (-3dB)
TOTAL HARMONIC DISTORTION	< 0.008% (1kHz, 5W, 8Ω load)
DYNAMIC RANGE	> 103dBA
MAXIMUM INPUT LEVEL	+28dBu
INPUT IMPEDANCE	10kΩ Unbalanced, 20kΩ Balanced
LATENCY	<350μs, flat setup

CONTROLS AND INDICATORS (FRONT)	High-Resolution TFT Display, Encoder with LED Halo
CONTROLS AND INDICATORS (REAR)	N/A
CONTROL AND MONITORING	RJ45 & GPIO
DIGITAL SIGNAL PROCESSING	32bit/96kHz with FIR/IIR Filters, Peak and RMS Limiters, Custom Quest Speaker Libraries
PROTECTION CIRCUITS	Thermal Protection, Over-Current Protection, DC Protection, HF Protection

MAINS POWER INPUT	Universal Mains, 100-240VAC, 50-60Hz
MAINS CONNECTOR	Standard IEC C14
POWER CONSUMPTION - STANDBY	<0.5W
POWER CONSUMPTION - IDLE	16W
POWER CONSUMPTION - 1/8TH POWER / 8Ω Load	120W
POWER CONSUMPTION - 1/3RD POWER / 8Ω Load	270W

HEAT GENERATED - STANDBY	1.7BTU/hr / 1.7kJ per hour
HEAT GENERATED - 1/8TH POWER / 8Ω Load	154BTU/hr / 159kJ per hour
COOLING	Fan-Forced Air Cooling – Temperature-Dependent
FAN NOISE	34dB(A) (Anechoic Chamber, @ 1m)

RACK SIZE	1RU
DIMENSIONS (W x H x D)	482 x 44 x 344mm (19" x 1.75" x 13.5")
WEIGHT	5.3kg (11.7lbs)
SHIPPING DIMENSIONS (W x H x D)	610 x 90 x 480mm (24" x 3.5" x 19")
SHIPPING WEIGHT	7.5kg (16.5lbs)

ACCESSORIES (INCLUDED)	Mains Cable, User Manual, Euroblock/Phoenix Plugs, Wi-Fi Antenna
ACCESSORIES (AVAILABLE SEPARATELY)	Rear Rack Ears
OPTIONS	Dante® Expansion Card (additional 4 inputs, Dante® AoIP, AES67 compatible)

QXD-1K

SPECIFICATIONS

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