Sonos

Amp Multi

Name: Amp Multi
Brand: Sonos
SKU: SONOS-AMP-MULTI

Multi-zone amplifier for professional installations.

Model AMLTIUS1BLK

Built for professional installation, Amp Multi provides unmatched multi-zone flexibility with GaN and PFFB technology to completely redefine what an 8-channel amplifier can do.

At a glance

All specifications

Power: 125 W per channel
Weight: 5.1 kg
Amplifier Technology: Class D with GaN and PFFB
Total Harmonic Distortion: 0.005% at 2.83Vrms-15Vrms
Frequency Response: ±0.5 dB, 15 Hz - 20 kHz
Signal-to-Noise Ratio: 114dB ref 125W into 8-Ohm

Price on requestCheck availability

Request a price

Features12
Downloads2

Overview

Built for professional installation, Amp Multi provides unmatched multi-zone flexibility with GaN and PFFB technology to completely redefine what an 8-channel amplifier can do. Amp Multi delivers 8 x 125W of power across up to four zones, leveraging advanced GaN technology and post-filter feedback (PFFB) for greater efficiency, clarity, and control. With ProTune, installers can optimise the sound for any low-impedance passive speakers, tailoring performance to placement and room acoustics. ProTune offers a full suite of manual controls, including a 10-band parametric EQ plus adjustable gain and delay offsets, enabling truly bespoke audio experiences. Its innovative chassis design enhances thermal performance, while recessed connectors, status LEDs, and a streamlined 2U rack mount simplify setup and ensure reliable, fanless cooling.

In the box

Sonos Amp Multi
Power Cable (Length: 6 ft (2 m))
Sonos Banana Plugs (Set of eight (8))
Documentation (Set-up guide and legal/warranty information)

Highlights

8 x 125W
4 zones
ProTune
2U rack mount
GaN
PFFB
Ethernet
WiFi 6
Apple AirPlay 2
Fanless

Features

Precision-built for professionals
Backed by thousands of hours of research and engineering, Amp Multi was built from the ground up to streamline professional installation at every stage. It’s designed to support your workflows and help you deliver bespoke audio experiences with precision and efficiency.
Multi-zone flexibility
Each output can be assigned to any zone, giving you complete flexibility in system design. Users can easily change audio sources and content, ensuring a seamless, consistent experience.
Innovation from the inside and out
Advanced GaN technology, Class D amplification, and post-filter feedback (PFFB) deliver exceptional audio quality with high efficiency. Its textured, thermally-optimised chassis enhances performance and durability all within a compact design built for the rack.
Ready to rack
Designed specifically for Amp Multi, the 2U Rack Mount streamlines installations by reducing wasted space, maximising airflow, and keeping cable management clean.
Built to breathe
The Rack Mount creates space above and below each unit to support airflow in a clean, 2U configuration.
Streamlined installation
Your browser cannot play the provided video file. With its flat back design, Amp Multi slides easily onto the Rack Mount. Installation is satisfyingly simple.
Space-saving design
Your browser cannot play the provided video file. Amp Multi eliminates the need for vent panels between rack units and reduces the number of screws required for installation—saving time, rack space, and hardware.
Looks right at home
Whether on a shelf, credenza, or mounted to the wall, Amp Multi’s compact design and refined finish make it an elegant addition to any space. It looks just as polished in plain sight as it does tucked into a rack.
Works with your devices
Partner integrations offer seamless control of your Sonos system alongside all your compatible smart home devices.
Recycled plastics
Amp Multi features 47% recycled plastic—helping reduce waste and give materials a second life.
Energy efficient
GaN technology helps Amp Multi consume less than 5.5W at idle to reduce heat and improve reliability, while software enhancements further reduce energy use during playback and standby.
Eco packaging
The exterior and interior packaging is 100% recyclable and crafted using paper certified by the Forest Stewardship Council®.

Specifications

Power: 125 W per channel; How much power it delivers to each speaker into its rated load.
Weight: 5.1 kg; Per unit, out of the box.
Model code: SONOS-AMP-MULTI; Quote it when you ask a specialist.

Audio

Speaker Outputs: 8 amplified outputs each independently configurable for stereo or mono
Power: 125 W per channel @ 8Ω (all channels driven)
Minimum Impedance: 2.67Ω with Sonos Architectural speakers
Damping Factor: >400 (ref. 8 ohms, 20 Hz to 1 kHz)
Amplifier Technology: Class D with GaN and PFFB
Total Harmonic Distortion: 0.005% at 2.83Vrms-15Vrms
Frequency Response: ±0.5 dB, 15 Hz - 20 kHz
Channel Separation (Crosstalk): -100dB at 1 kHz 2.83Vrms -80dB at 10 kHz 2.83Vrms
Signal-to-Noise Ratio: 114dB ref 125W into 8-Ohm
ProTune: 10-band parametric EQ with ±15dB gain, Q, and frequency control. Option for high-shelf, low-shelf, and bell filter types. Gain trim: -15 - +5 dB Delay: 0 - 50ms Highpass: 15-100Hz
Optimise Sonos Speakers: When selected in the Sonos app, Optimise Sonos Speakers allows Amp Multi to recognise Sonos Architectural speakers, then applies custom tuning and DSP to provide more robust sound with a more even frequency response, optimising system performance and ensuring stable operation.

Details + Dimensions

Dimensions (Single Unit): Height: 2.52 in (64.5 mm) Width: 17.2 in (436.8 mm) Depth: 10.44 in (265.2 mm)
Dimensions (with 2U Rack Mount): Height: 3.47 in (82.3 mm) Width: 19.01 in (483 mm) Depth: 10.44 in (265.2 mm)
Weight: 5.06 kg
Colours: Black
Finish: Matte
LEDs: Front: Device status Rear: Device status, output status (x8), RJ45 status light

Power + Connectivity

Power Consumption: 5.4 W (idle) 180 W (all channels driven at 1/8 output power, 8 Ohms)
Power: Auto-switching 100-240V 50/60Hz 10A AC universal input
Wired Networking Interface: 100BaseTX, Ethernet RJ45
Wireless Networking Interface: Compatible with WiFi 6. Connect to Wi-Fi with any 802.11a/b/g/n/ac/ax 2.4 GHz/5 GHz broadcast-capable router.
Analogue Audio Input: 2 x RCA inputs -10dB (stereo into one zone)
USB-C Analogue Audio Input: 44.1 kHz / 16 bit (stereo into any zone) Requires Sonos Line-In Adapter
Subwoofer Connections: 1 x RCA output -10dB (configurable to output from one zone), and 1x Sonos Sub per zone
Direct Streaming Formats: Apple AirPlay 2, Spotify Direct Control, and more.
CPU: Quad Core 4xA55 1.9GHz

Requirements

Speakers: Passive speakers required for audio output
Internet Connection: Ethernet connection or WiFi Ethernet needs Category 5 (CAT5) cable or higher
Power Source: Nearby electrical outlet
Sonos app: The latest generation of the Sonos app running on a compatible device