The Amp Multi is a multi-zone amplifier by Sonos that delivers 125 watts x 8 channels into 8 ohms, all channels driven (FTC). It was released in September 2026. It is an 8-channel design using a Class D output stage. A minimum impedance of 2.67 ohms makes it compatible with a wide range of loudspeakers. It has a built-in DAC, so you can play digital sources directly with no separate DAC unit needed. The Sonos Amp Multi has an MSRP of $3,500.
Performance Specs
One of the most important factors when deciding on a multi-zone amplifier is its power ratings and compatibility with your speaker's impedance requirements. The Sonos Amp Multi is rated at 125 watts RMS into 8-ohms. Sonos provides this wattage at a THD (Total Harmonic Distortion) of 0.005% which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 125 watts into 8-ohms (15 Hz-20 kHz) at 0.005%
- 114dB Signal to Noise Ratio
How loud will 125 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
When pairing the Sonos Amp Multi with a passive Bookshelf (Stand mount) or Passive Floor Standing (Tower) speaker, you have to check if their Max Power Range is below the max wattage of the amp for the given impedance levels.
Operating your amp outside of this max range may damage the speakers.
Inputs and Outputs
Besides the performance specs of the Sonos Amp Multi, the next important feature set that you have to evaluate is the input and output selections that it offers.
Sonos Amp Multi has total of 2 Analog inputs .
Sonos Amp Multi Back View (Click the image for the larger version)
Inputs
- Total Number of Analog Inputs: 2
Outputs
- Speaker Outputs
- Mono-RCA(Sub) Preamp Outputs
- Subwoofer Output (1)
Subwoofer Output
Sonos Amp Multi has a dedicated subwoofer output which can be used to connect it directly to a powered subwoofer via an LFE(Low Frequency Effects) cable.
Check our
Powered Subwoofers page to find a subwoofer that will work with Sonos Amp Multi amp and your speakers.
DAC and Digital Music
The Sonos Amp Multi's built-in DAC allows the connection of digital sources directly, eliminating the need for an external DAC.
Zones and channels
The Sonos Amp Multi has
8 amplifier channels, which is
4 stereo zones from one chassis. That is the
number to compare across this category, not the watts: a distribution amplifier is
bought to replace 4 separate stereo amplifiers and the rack
space, mains sockets and cabling that go with them.
Most of these will also run each channel as its own mono zone where a room needs a
single speaker, so the stereo figure above is the conservative reading. As the maker
describes it: Yes (Sonos, up to 8 zones in one chassis).
What the power figure actually means
Sonos Amp Multi is rated
125 watts into 8 ohms with every channel driven at once,
which is 1,000 watts in total and the strict way to measure a multi-channel amplifier. Most makers of any kind of
multi-channel amplifier publish a figure measured with two channels running and the
rest idle, which flatters a shared power supply. This one does not.
As the manufacturer states it: 125 watts x 8 channels into 8 ohms, all channels driven (FTC)
Feeding it
Sources reach the Sonos Amp Multi at line
level: 2 analogue line inputs, a subwoofer output.
Everything in this category is designed to sit in a rack behind the scenes, so volume
and source selection are normally handled per zone rather than from a front panel.
Sonos Amp Multi External Dimensions and Weight
Sonos Amp Multi has external dimensions of (H x W x D) 2.52inch x 17.2inch x 10.44inch (64.5mm x 436.8mm x 265.2mm ). The unit weighs
5.06 kg (11.2 lbs).
Base Surface Area
Base surface area of an integrated amplifier may become an important decision factor when the space in your room or desk is limited.
The base area of the Sonos Amp Multi is approximately 1158.4cm2 / 179.6inch2.
- Width: 436.8mm (17.2")
- Height: 64.5mm (2.52")
- Depth: 265.2mm (10.44")
- Weight: 5.06 kg (11.2 lbs)
- Base Surface Area: ~1158.4cm2 / 179.6inch2
- Volume: ~7.5 liter / 2.0 gallon
Available colors
Sonos Amp Multi is available in Black color options.
Official Product Page
Official manufacturer's product page for the Sonos Amp Multi Integrated Amplifier can be found below:
Official Product Page for Sonos Amp Multi
Warranty
1 Year of parts warranty and 1 Year of labor warranty is generally provided for the Sonos Amp Multi by the manufacturer.
Sonos Amp Multi Lifestyle
| General |
| Brand |
Sonos |
| Full Model Name |
Sonos Amp Multi |
| Release Date |
September 2026 |
| Amplifier Type |
Multi-Zone Amplifier |
| Number of Channels |
8 |
| Amp Class |
Class D |
| Amplifier Technology |
Solid State |
| Performance |
| Watts RMS per Channel into 8-ohms |
125 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
N/A |
| Frequency Bandwidth |
15 Hz-20 kHz |
| Damping Factor |
400 |
| THD |
0.005% |
| Minimum Impedance |
2.67 |
| Signal to Noise Ratio |
114 dB |
| Digital Music |
| Built-in DAC |
Yes |
| Bluetooth |
No |
| WiFi |
Yes |
| Ecosystem |
| Apple AirPlay |
Yes |
| Apple AirPlay2 |
Yes |
| DTS Play-Fi |
|
| Chromecast built-in |
|
| Roon |
|
| HEOS |
|
| BluOS |
|
| CONNECTIONS |
| Total Analog Inputs |
2 |
| Phono Input |
No |
| Optical Digital Inputs |
No |
| Coaxial Digital Inputs |
No |
| USB Input |
No |
| Preamp Outputs |
Mono-RCA(Sub) |
| Headphone Output |
No |
| Subwoofer Output |
Yes |
| Removable Power Cord |
|
| PHYSICAL SPECS |
| Height |
64.5mm (2.52") |
| Width |
436.8mm (17.2") |
| Depth |
265.2mm (10.44") |
| Weight |
5.06 kg (11.2 lbs) |
| Available Colors |
Black |
| OTHER |
| Parts Warranty |
1 Year |
| Labor Warranty |
1 Year |