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Sonos Amp Multi

Built for professional installation, Amp Multi provides unparalleled multi-zone flexibility thanks to GaN and PFFB technologies that completely change the idea of what an 8-channel amplifier can do.

Black

Available exclusively through installers

Contact us for more details

"The name of Sonos, the audio brand from US, has been associated to audio product with great sound quality. From Sonos Era 100 and Sonos Ace, which both we reviewed before, Sonos offers you equally great listening experience from one room to another at your home."

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“I had the chance to try out the Sonos Arc Ultra both as a standalone soundbar and as part of a full setup. Even on its own, it sounded awesome—delivering an immersive surround experience that really impressed me.

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"Arc Ultra gives you immersive surround sound without needing a subwoofer or extra speakers. Whether you're watching movies, listening to music, or gaming, it handles it all like a champ. The price might seem a bit steep, but when you look at other options with similar specs, it's pretty much in the same ballpark—and you're getting the latest tech.”

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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-optimized chassis enhances performance and durability all within a compact design built for the rack.

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.

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Works with your devices

Partner integrations offer seamless control of your Sonos system alongside all your compatible smart home devices.

Setup made simple

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.

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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.

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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. Analog and USB inputs provide additional flexibility, and the subwoofer output is freely assignable to any zone.

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Easy app control

Control everything from the Sonos app—zones, sources, output assignments, and status monitoring—all in one place.

Ready to be placed on the shelf

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Built to breathe

The Rack Mount creates space above and below each unit to support airflow in a clean, 2U configuration.

Streamlined install

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.

More Details

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Breeze through setup

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Perfectly tuned for the room

Fill your home with music

FAQ

What is the warranty length for Amp Multi?

Amp Multi comes with a 3-year warranty, giving you peace of mind and reliable coverage.

Is the 125 W per channel rating peak power or continuous?

Amp Multi delivers 125 watts of continuous (RMS) average power per channel into an 8-ohm load, with all channels driven.

What is the damping factor of Amp Multi?

The damping factor is approximately 437 when paired with an 8-ohm speaker.

What if I’m in a noisy environment and my device can’t hear the setup chirp?

If the chirp is not detected, you can enter the PIN printed on the back of the unit directly in the Sonos app.

How much clearance does Amp Multi need for airflow if it’s not rack-mounted?

We recommend allowing at least four inches (10 centimeters) of space on the top and sides for proper ventilation.

Does Amp Multi support Trueplay?

No, Amp Multi introduces ProTune—a manual tuning feature that lets you fine-tune the sound for any low-impedance passive speaker and room. When used with Sonos Architectural speakers, enabling Optimize Sonos Speakers applies custom tuning and DSP tailored to their unique acoustic design.

Why is Amp Multi 1.5U in height, and how does that fit in a rack?

Amp Multi shares the same 1.5U height as Sonos Amp, ensuring consistency when mixing device types. The Rack Mount (sold separately) adds an extra 0.25U of space above and below the unit—for a total height of 2U—for optimal airflow and easier access without wasting rack space.

Why doesn’t the Rack Mount include additional rack screws?

To avoid waste and stay aligned with our sustainability goals, we only provide the screws needed to secure Amp Multi to the Rack Mount.

How do I assign the subwoofer output to a specific zone?

In the Sonos app, go to Zone Settings, select Connect Sub, and follow the instructions to assign the subwoofer output to the desired zone.

How many subwoofers can Amp Multi support?

Amp Multi supports Sonos Sub 4, Sub (Gen 3), and Sub Mini. You can assign one Sonos Sub per zone, up to four total. The subwoofer output port supports a powered third-party sub, which can be freely assigned to any zone in the app.

An acoustic and aesthetic
masterpiece

The first-of-its-kind design exquisitely balances sonic performance and visual appeal, precisely angling each driver while looking worthy of display.

Play from any service or device

Wi-Fi: The best sound experience. Stream the highest-quality audio from anywhere in your house without the interruptions from calls or notifications.²

Bluetooth: With the press of a button, you and your family and friends can stream directly from a paired Bluetooth device.

Line-in: Unlock new listening possibilities. Connect a turntable, computer or other audio source using an auxiliary cable and a line-in adapter.

Your voice, your choice

Era 300 is designed for ease of listening and mind, with multiple ways to protect your privacy. Privacy with a tap and security with a switch.

Tech Specs

Speaker Outputs

8 amplified outputs each independently configurable for stereo or mono

FTC Power Output Rating

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: 15-100HzAll available on per channel basis

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

11.17 lbs (5.06 kgs)

Colour

Black

Finish

Matte

LEDs

Front: Device status Rear: Device status, output status (x8), RJ45 status light

Power Consumption

5.4 W (idle, with WiFi disabled) 180 W (all channels driven at 1/8 output power, 8 Ohms)

Power

Auto-switching 100-240V 50/60 Hz 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

Analog Audio Input

2 x RCA inputs -10dB (stereo into one zone)

USB-C Analog Audio Input

44.1 kHz / 16 bit (stereo into any zone) Requires Sonos Line-In Adapter
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

Electrical outlet

Sonos App

The latest generation of the Sonos app running on a compatible device

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  4. Amazon Alexa availability varies by country and language. Amazon account required. Compatible smart devices require internet connection. Some features may require enabling Alexa Skills.
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