Products·Amplifiers & Streamers·Amplifier Series

Root 4

4-Channel DSP Amplifier

4×4 matrix DSP amplifier delivering 250W per channel at 8 ohms. Bridgeable to 2×800W mono at 4 ohms. 48-bit DSP with 20 preset configurations.

XAM-DSP-RT4
1000W8ΩPowered
Black
250W× 4CH@ 8Ω
2× 800WBridged mono
4×4 MatrixDSP routing
48-bit DSPProcessor
XLRInput
NL4Speakon out
1URack
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Power Output

250W per channel.
Up to 800W bridged.

Stereo / ch
Bridged mono
8 Ω
250W
450W
4 Ω
450W
800W

4 channels · Class D · 1U rack · XLR balanced inputs · Speakon NL4 outputs · 48-bit DSP

Signal Routing

Any input.
Any output.

The 4×4 routing matrix lets you send any input signal to any combination of output channels. Sub mixes, zone splits, mono sums — all programmable without external hardware.

Out 1
Out 2
Out 3
Out 4
In 1
In 2
In 3
In 4

Diagonal = default identity routing (In 1→Out 1, etc.) · Any cell is programmable via Root 4 DSP Software

Bridge Mode

4 channels stereo.
Or 2 × 800W mono.

Bridge any adjacent channel pair into a single high-power mono output. Drive subwoofers or high-SPL zones without additional hardware.

Stereo mode
CH1
250W
CH2
250W
CH3
250W
CH4
250W
Total: 1000W @ 8Ω
Bridge mode
CH1+2
800W
CH3+4
800W
Total: 1600W @ 4Ω

Speakon NL4 — Bridge wiring

Pin 1+ / 1−
CH1 (+) / CH1 (−)
First bridged mono channel
Pin 2+ / 2−
CH2 (+) / CH2 (−)
Second channel (stereo only)

Signal Path

Balanced in.
Speakon out.

Inputs
XLR Balanced — CH1
0.77V / 20KΩ
XLR Balanced — CH2
0.77V / 20KΩ
XLR Balanced — CH3
0.77V / 20KΩ
XLR Balanced — CH4
0.77V / 20KΩ
DSP + Power Stage
Class D
250W/CH
48-bit DSP
4×4 Matrix routing
4CH
>109dB
<0.1%THD
20–22kHz
Outputs
NL4 — CH1
250W / 450W
NL4 — CH2
250W / 450W
NL4 — CH3
250W / 450W
NL4 — CH4
250W / 450W

DSP Control

Full control.
Without limits.

Root 4 DSP Software gives you complete control over every parameter — EQ, routing, crossovers, delay, gain, and limiting — from a single interface.

Download Root 4 DSP Software
20 Preset configurations
Save and recall complete system states
Butterworth · Bessel · L-R
All standard crossover alignments
4×4 Matrix routing
Full input-to-output assignment control
Per-channel delay
Up to 500ms time alignment
31-band parametric EQ
Per channel, pre and post crossover
Limiter & gain control
Independent per output channel

Technical Specifications

16 parameters · scroll to explore
Power RMS
250W
fills a large living room
01 / 16
Electronics
Power RMS
250W
Total Power
1000W
Channels
4
Amp Class
Class D
Impedance
8Ω
Physical
Dimensions
482.9 × 43.9 × 324.9 mm
Weight
6.5kg
Housing
Aluminium
Colours
Black
Power Type
Powered
THD+N
<0.1% @ 1KHz, 1W, 8Ω
Connectivity
DSP
48KHz, 48-bit Fixed-Point DSP, 24-bit A/D & D/A
THD+N
<0.1% @ 1KHz, 1W, 8Ω
SNR
>109dB @ 1KHz
Protection
Short, DCP, OVP, UVP, OCP, OTP
Rack Mount
1U
Proprietary Technology

Built different. By design.

Full Technology Story
AeroFrame Chassis
PsySculpt
In Use

Common installations

The signal chain.

Root 4 handles DSP and amplification in a single 1U chassis. XLR balanced in, Speakon NL4 out — no separate processor required.

Source
Any source
media player / DAW
XLR balanced
DSP + Amplifier
Root 4
4×4 Matrix
4ch · 250W/ch · 48-bit DSP
Speakon NL4
Output
Speakers
XSCACE passive
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Gallery

Root 4 in context

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Root 4 1
Frequently Asked Questions
What is the XSCACE Root 4?
Specified for luxury residential AV racks, commercial hospitality, corporate AV, and multi-zone architectural audio systems in Canada, the UK, and India.
What is the power output of the Root 4?
The Root 4 is rated at 250W RMS into 8Ω.
What type of product is the Root 4?
The Root 4 is an amplifier product.
How deep is the Root 4?
The Root 4 requires 324.9mm of depth.
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