GND 4420

FAVO GND4420 Digital Amplifier

Exceptional levels of audio efficiency

Four-channel, lightweight amplifier with high power output of 4x4000W, featuring an integrated 48-bit signal processor. Independent four analog XLR audio inputs with the capability to route any input to any speakon speaker output. High energy efficiency and very low heat production. Comes with a 3-year limited product warranty.

We designed the GND series to fit four channels of the purest sound with immense power into a compact form. The amplifiers produce very little heat, and audio path is controlled by our 4x4 DSP processor.

KEY FEATURES:

DSP processor functions available on all inputs and outputs
built-in amplifier processor possesses the key functions of the NSP248 DSP model
control via Ethernet (daisy chain socket)
better energy efficiency - more power in a smaller enclosure and less energy wasted on heat production
temperature-controlled fans
the air intake protective sponge can be easily removed and cleaned

TECHNICAL DATA:

GENERAL SPECIFICATIONS

Number of channels: 4
Total power output, all channels driven: 20,000 Watts RMS
Audio inputs: four analogue XLR
Digital signal processing: high performance DSP processing on all inputs and outputs. FAVO AllControl Software environement
Control, monitoring and system status alarms: 100Mbit LAN with loop through
System sleep and wakeup: network command and audio detection
Power output (EIAJ Test Standard, 1 kHz, 1% THD): 4x2400W@8Ohm, 4x4000W@4Ohm, 4x5000W@2Ohm, 2x8000W@8Ohm Bridge, 2x10000W@4Ohm Bridge

AUDIO PERFORMANCE

Amplifier topology: D Class, Gallium Nitride (GaN) transistors give more power in less space and produce less heat
Dynamic range to amplifier output: >110 dBA (20 Hz - 20 kHz, A weighted)
Gain (with all DSP level controls set to 0dB): software selectable (32dB by default)
Frequency response, 4Ohm load: 20 Hz - 20 kHz (1 W @ 8 Ω, ±0.5 dB)
Total harmonic distortion, THD: <0.5% from 1 W to full power (Typical value<0.05%)
Inter-channel crosstalk, worst case combination: > 66 dB @ 1 kHz
Damping Factor (8 ohms): >5000@20-200 Hz
Slew Rate: 50 V/μs @ 8Ω
Maximum analogue input level: 20dBu (<1%THD)
Analogue input sensitivity range for full output: 0dBu to +20dBu, continuously adjustable
Analogue input (four channels): four independent balanced XLR inputs

DIGITAL SIGNAL PROCESSING

Sample rate: 48kHz throughout
Physical inputs to DSP drive modules: 4x analogue inputs can be routed to DSP and any output
Drive module input processing:
input signal routing, 10ms delay, gain, HPF, Phase, Mute EQ: LS, HS, 10x PEQ / band pass
Drive module output processing:
source, 10ms delay, gain, Phase, Mute, crossover filters, peak limiters EQ: low shelf, 10x PEQ / band pass and shelving filters. FIR 576 taps available
Preset management: 100 preset slots including snapshots and loudspeaker settings, which can be recalled on individual outputs in admin mode.

POWER SUPPLY

Topology (main power supply): Power Factor Correction

PROTECTION SYSTEMS

The protection systems will endeavour to deliver the maximum power possible for a given set of conditions, applying limiters only in extreme circumstances. Muting will only occur when a dangerous situation is detected

PHYSICAL

Cooling: tunnel through cooling system, front to back
Analogue IN and LINK: 4 x XLR inputs, no links
Amplifiers outputs: 4 x Speakon NL4 type connectors
Enclosure: 482 x 44 x 470 mm
Net Weight: 12.0kg

GND44 Signal flow chart and routing

30-months warranty for electronics

Favo provides a 30-months warranty on all electronic devices in the case of production defects. It also provides the fastest technical support in the event of a failure and offers a comprehensive post -warranty service.