The M804DSP is a smart full matrix DSP Class D 4-channel amplifier that delivers flexible reliable power output of 4 x 750W in a full rack 2U format, driving both conventional low impedance (2Ω to 16Ω) loudspeakers and high impedance (70V/100V) transformer coupled loudspeakers or any mix of the two. The on board, state-of-the-art, full matrix, DSP engine can be configured to suit a wide range of tasks, without the need for additional equipment, to drive a wide range of loudspeaker systems. Everything you need is right there. The close integration of processing and amplification allows the DSP to monitor and better adapt to amplifier behavior, making dynamics processing far more accurate and effective than that typically achieved with separate components. The active PFC (Power Factor Correction) power supply technology enables universal AC mains operation and delivers consistent, regulated power worldwide.

Integrated web interface

The M804DSP can be accessed anytime, anywhere through Wi-Fi via a built-in Wireless-Access-Point (WAP) or through ethernet for simple connection easy configuration, controlling and powering any speaker system, creating the most impressive multi-zone sound system in minutes. The easy-to-use web-based interface allows remote control of all DSP functions as well as monitoring of all amplifier vital functions from any PC, tablet, or smartphone, regardless of operating system. No software to install (it’s built into the M804DSP). Simply connect via the Ethernet port or the built-in Wi-Fi, and you’re ready to go.

DSP Processing

The integrated web interface controls a powerful signal processing engine extending the level of functionality. The state-of-the-art full matrix Digital Signal Processing (DSP) can be configured to suit a wide range of tasks, without the need for additional equipment.
From processing input sources, managing up to 4 zones, correcting up to 4 independent rooms, to fine-tuning 4 speaker outputs, all the powerful state-of -the-art processing tools you need are there.

Technical Specifications

Product Type	Class D Amplifier with DSP
Frequency Response	20Hz – 20kHz (+0 / -0.5dB)
Amplifier Technology	UMAC Class D – Full Bandwidth PWM Modulator With Ultra-Low Distortion
Number of Amplifier Channels	4 Channels Low Impedance (LoZ) / 2 Channels High Impedance (HiZ)
Amplifier Power – Stereo 8Ω	4 x 400W
Amplifier Power – Stereo 4Ω	4 x 750W
Amplifier Power – Stereo 2Ω	4 x 750W
Amplifier Power – Bridge 8Ω	2 x 1500W
Amplifier Power – Bridge 4Ω	2 x 1500W
Amplifier Power – 100V	2 x 1500W
Amplifier Power – 70V	2 x 1200W
Speaker Output	2Ω – 16Ω | 100V | 70V
Zones Output	4-Zones Output
THD+N	<0.05% (20Hz-20kHz, 8Ω load, 3dB below rated power)
SNR (Signal to Noise Ratio)	>108dB (A-weighted, 20Hz-20kHz, 8Ω load)
Output Voltage	85Vp / 170Vpp (unloaded) // Bridged 170Vp / 340Vpp (unloaded)
DSP Technology	Ultimate DSP with WI-FI and Ethernet Connection
DSP Adjustable Parameters	Filters: PEQ, FIR, hi/lo-shelving, all-pass, band-pass, hi/lo-pass | Limiters: RMS Voltage, Peak Voltage | GPIO Functions | Routing
DSP Presets	Save and Load Individual Presets and Preset Libraries
Delay Adjustment	100ms (34.3m) per Output
Control Type	Controlled Via Webpage – Compatible with Desktop, Tablet and Mobile Phone (Wireless or Cable 1 x RJ45)
Wireless Connection System	Works as a WI-FI Access Point (WAP) or WI-FI Client
Audio Signal Inputs	4 x Analog Unbalanced Inputs | 4 x Analog Balanced Inputs | Stereo S/PDIF
Input Connectors	4 x RCA | 2 x 6-Pole 3.5mm Phoenix Type | 1 x RCA | 8 x GPIO
Audio Signal Outputs	Stereo S/PDIF
Output Connectors	1 x RCA | 8 x GPIO
Speakers Output Connectors	2 x 4-Pole 5mm Phoenix Type
Protections	Short Circuit, DC, Undervoltage, Temperature and Overload Protection
Operating Temperature Range	0ºC – 40ºC
Cooling Type	Speed Controlled Fan
Power Supply	UREC Universal Mains Switch Mode Power Supply (SMPS) with Power Factor Correction (PFC) and Standby Converter
Power Input	AC 100V – 240V 50Hz/60Hz
Mains Connector	Standard IEC socket
Power Consumption	700W
Special Features	GPIO Functions: Standby, Mute, Volume Control, Trigger IN, Trigger OUT
Fittings	2U 19″ Rack
Dimensions (WxHxD)	88 x 440 x 332 mm (3.5 x 17.3 x 13.1 in)
Fixation	19″ Rack Mount
Net Weight	7.4kg (16.3 lbs)
Shipping Weight	7.7kg (17 lbs)
Accessories	2 x Rack Ears, 4 x Adhesive Feet (included)