Name: Sonos Amp Multi 8-Channel Amplifier
Brand: Sonos
Price: 5000.0 AUD
Availability: OutOfStock

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An 8-channel Class D amplifier for passive speakers, built for professional installation. Amp Multi has eight amplified outputs at 125 W per channel into 8 ohms, supports up to four zones, and mounts in a 2U rack or sits on a shelf. Black.

Pre-order now for delivery at the start of September!

Sonos says Amp Multi is built for professional installation, with GaN and post-filter feedback (PFFB) technology in a Class D design. Each output can be assigned to any zone, and everything is set up and controlled from the Sonos app.

Outputs

8, each stereo or mono

Power

125 W per channel at 8 ohms

Zones

Up to 4

Technology

Class D with GaN and PFFB

Networking

Ethernet and WiFi 6

Size (H x W x D)

64.5 x 436.8 x 265.2 mm

Why you will love it

Eight outputs, up to four zones

Sonos says each output can be assigned to any zone, so system design is flexible. Every output can be configured as stereo or mono.

Amp Multi plays Apple AirPlay 2 and Spotify direct control, and has two RCA analogue inputs and a USB-C input for a Sonos Line-In Adapter.

Tuned for the room

ProTune gives manual control per output: a 10-band parametric EQ with plus or minus 15 dB gain, gain trim, a delay of 0 to 50 ms and a high-pass filter from 15 to 100 Hz.

Sonos says that when Optimise Sonos Speakers is selected in the Sonos app, Amp Multi recognises Sonos Architectural speakers and applies custom tuning.

Rack mount or shelf

The compact chassis is fanless and measures 64.5 mm high. Sonos lists a 2U Rack Mount designed for Amp Multi, with a flat back design that slides onto the mount.

Sonos says it also suits a shelf, credenza or wall mounting.

Rear of the Sonos Amp Multi showing eight speaker outputs and connections

Is it right for you?

A great fit if you…

Are an installer or integrator designing a multi-room system
Have low-impedance passive speakers in several rooms
Want one amplifier for up to four zones

Worth knowing

Sonos says it is built for professional installation
It needs passive speakers connected to produce sound
It needs an Ethernet connection or WiFi and the Sonos app
The 2U Rack Mount is a separate Sonos item

Build your system

Amp Multi powers passive speakers. Choose the speakers and any bass for each zone.

Smaller installs: For a single stereo zone see the Sonos Amp.
Streaming for existing amplifiers: See the Sonos Port.
Speakers: Browse in-ceiling speakers, in-wall speakers or outdoor speakers.
More Sonos: See the Sonos range.

Specifications

Audio

Speaker outputs	8 amplified outputs, each configurable for stereo or mono
Power	125 W per channel at 8 ohms (all channels driven)
Minimum impedance	2.67 ohms with Sonos Architectural speakers
Amplifier technology	Class D with GaN and PFFB
Damping factor	>400 (ref. 8 ohms, 20 Hz to 1 kHz)
Total harmonic distortion	0.005% at 2.83 Vrms to 15 Vrms
Frequency response	+/-0.5 dB, 15 Hz to 20 kHz
Signal-to-noise ratio	114 dB ref 125 W into 8 ohms
Channel separation	-100 dB at 1 kHz; -80 dB at 10 kHz (2.83 Vrms)
ProTune	10-band parametric EQ, gain trim -15 to +5 dB, delay 0 to 50 ms, high-pass 15 to 100 Hz, per channel

Connections

Analogue input	2 x RCA, -10 dB (stereo into one zone)
USB-C input	44.1 kHz / 16 bit, stereo into any zone; requires Sonos Line-In Adapter
Subwoofer	1 x RCA output, -10 dB, plus 1 x Sonos Sub per zone
Wired network	100BaseTX Ethernet RJ45
Wireless network	WiFi 6; 802.11a/b/g/n/ac/ax, 2.4 GHz / 5 GHz
Direct streaming	Apple AirPlay 2, Spotify direct control, and more
CPU	Quad Core 4xA55 1.9GHz

Physical and power

Dimensions, single unit (H x W x D)	64.5 x 436.8 x 265.2 mm
Dimensions with 2U Rack Mount (H x W x D)	82.3 x 483 x 265.2 mm
Weight	5.06 kg
Colour and finish	Black, matte
Power consumption	5.4 W idle; 180 W with all channels driven at 1/8 output power into 8 ohms
Power input	100-240V 50/60Hz 10A AC universal
Recycled plastic	47%

Specifications from the Sonos Australia Amp Multi product page, checked November 2026.

What is in the box

Sonos Amp Multi
Power cable, 2 m (6 ft)
Sonos banana plugs (set of eight)
Set-up guide and legal information

Questions people ask

How many zones does it support?

Sonos lists four zones, with eight amplified outputs that can each be assigned to any zone.

How much power per channel?

125 W per channel at 8 ohms with all channels driven.

Does it need professional installation?

Sonos says Amp Multi is built for professional installation.

Can I rack mount it?

Sonos lists a 2U Rack Mount designed for Amp Multi. It is a separate item.

Does it support AirPlay 2?

Yes. Sonos lists Apple AirPlay 2 and Spotify direct control.