Sonos Amp Multi-Room Streaming Amplifier
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.
Advanced GaN technology, Class D amplification, and post-filter feedback (PFFB) deliver exceptional audio quality with high efficiency. Its textured, thermally-optimized chassis enhances performance and durability all within a compact design built for the rack.
Manually tune each output
With ProTune, you can optimize the sound for the placement and room acoustics of any low-impedance passive speakers. This feature offers a comprehensive set of manual controls, including a 10-band parametric EQ and adjustable gain and delay offsets.
Intuitive configuration
An audible chirp identifies each unit in the Sonos app—no PIN required. Front and rear LEDs indicate setup mode for a more seamless experience.
Intelligent indicators
Speaker outputs automatically detect when a speaker is connected, while status LEDs provide real-time feedback during setup. Ambient light sensing adjusts brightness to the environment, and all indicators are configurable in the app.
Power more speakers
Select the feature Optimize Sonos Speakers in the Sonos app to unlock the ability to power up to three Sonos Architectural speakers per output (24 total). The custom DSP optimizes the EQ, while limiter control enables even and consistent volume dynamics throughout the frequency range.
Flexible connectivity
Connect via wired Ethernet or WiFi 6 and stream up to four audio sources simultaneously using the Sonos app, Apple AirPlay 2, or Spotify Connect. Analogue and USB inputs provide additional flexibility, and the subwoofer output is freely assignable to any zone.
Easy app control
Control everything from the Sonos app—zones, sources, output assignments, and status monitoring—all in one place.
Designed specifically for Amp Multi, the 2U Rack Mount streamlines installations by reducing wasted space, maximizing 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
With its flat back design, Amp Multi slides easily onto the Rack Mount. Installation is satisfyingly simple.
Space-saving design
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.
Tech Specs
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
Optimize Sonos Speakers
When selected in the Sonos app, Optimize Sonos Speakers allows Amp Multi to recognize Sonos Architectural speakers, then applies custom tuning and DSP to provide more robust sound with a more even frequency response, optimizing system performance and ensuring stable operation.
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
11.16 lbs (5.06 kg)
Colours
Black
Finish
Matte
LEDs
Front: Device status
Rear: Device status, output status (x8), RJ45 status light
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 Connections1 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
Sonos Amp Multi
Power Cable
Length: 6 ft (2 m)
Sonos Banana Plugs
Set of eight (8)
Documentation
Quickstart Guide and legal/warranty information
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