Sonos Amp Multi
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.
Sonos Amp Multi is a four-zone, eight-output amplifier designed to streamline installations and deliver high-quality audio. Assign each of the eight 125W channels to any zone. It uses GaN technology for significantly greater power efficiency, consumes 5.4W at idle (with WiFi disabled) which minimizes heat generation, improves reliability, and eliminates the need for fans. Post-filter feedback (PFFB) enables real-time signal correction, ensuring exceptional audio clarity, precision, and control across different speaker loads. The Rack Mount (sold separately) has been designed specifically for Amp Multi, creating space above and below each unit to support airflow in a 2U configuration. Amp Multi’s flat back makes it easy to stand upright so the Rack Mount slides on easily. Secure with just four screws for a satisfyingly simple installation. Clear status LEDs provide immediate feedback, automatically adjusting to the room’s lighting for optimal visibility. The Sonos app gives you complete control over everthing: zones, sources, output assignments, light indicators, and status monitoring. Setup is easier than ever thanks to an audible chirp that identifies each unit — no PIN required. Stream up to four audio sources simultaneously from the Sonos app, Apple Airplay 2, or Spotify Connect, with connection from wired Ethernet or WiFi 6. Amp Multi provides optimization profiles for Sonos Architectural speakers as well as ProTune, which includes a full suite of manual controls to optimize each output for each space. Amp Multi offers true multi-zone flexibility, empowering integrators to deliver bespoke audio experiences
Sonos Amp Multi Key Features
- Up to 4 zones
- 8 x 125W per output at 8Ω
- GaN-powered with PFFB technology
- Convection cooled
- ProTune manual EQ, delay, and gain
- 2U Rack Mount (sold separately)
- Ethernet and WiFi 6 connectivity
- Supports Apple AirPlay 2 and Spotify Connect
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.
Manually tune each output with ProTune
With ProTune, you can optomise the sound for the placement and room accoustics 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 configerable in the app.
Power more speakers
Select the feature optimise Sonos speakers in the Sonos app to unlock the ability to power up to three Sonos Architectural speakers per output (24 in total). The custom DSP optimises the EQ, while limiter control enables even and consistent volume dynamics throughout the frequency range.
Ethernet or WiFi for flexible connectivity
Connect via wired ethernet or WiFi 6 and stream upto 4 audio sources simultaneously using the Sonos app, Apple Airplay2, or Spotify connect. Analogue and USB inputs provide additional flexibility and the subwoofer output is freely assignable to any zone.
Set Up made simple
With the Sonos app easily control, zones, sources, output assignments and status monitoring all in one place.
Ready to rack with optional RKMTAWW1BLK mount
Designed specifically for Amp Multi, the 2U Rack Mount streamlines installations by reducing wasted space, maximising airflow, and keeping cable management clean.
The Rack Mount creates space above and below each unit to support airflow in a clean, 2U configuration.. With its flat back design, Amp Multi slides easily onto the Rack Mount. Installation is satisfyingly simple..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..
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.
Specifications:
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 |
| Dampning 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 Seperation (cross talk) | -100dB at 1 kHz 2.83Vrms
-80dB at 10 kHz 2.83Vrms |
| Signal to noise ratio | 14dB 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 All available on per-channel basis |
| Optimise Sonos Speakers | When selected in the Sonos app,Optimise Sonos Speakers allows Amp Multito 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 | 5.06kg |
| 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. |
Box Contents:
- Sonos Amp Multi
- Power cable - Length: 6 ft (2 m)
- Sonos Banana Plugs (set of 8)
- Documentation- Quickstart Guide and legal/warranty information
Requirements:
- Speakers
- Passive speakers required for audio output
- Internet connection
- Ethernet connection or WiFiEthernet needs Category 5 (CAT5) cable or higher
- Power source
- Sonos app
- The latest generation of the Sonos app running on a compatible device