Dealer Pre-Order - Sonos Amp Multi | AMLTIUS1BLK
Dealer Pre-Order - Sonos Amp Multi | AMLTIUS1BLK
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SKU: AMLTIUS1BLK
UPC: 840136816706
Warranty: 3 years
Sonos Amp Multi • Dealer Portal Listing
Rack-first, high-density distributed audio. (Dealer Exclusive)
A multi-zone streaming amplifier built for professional racks: 4 independent zones, 8 amplified outputs, and 125W RMS continuous per channel @ 8Ω (all channels driven)—all control and configuration handled in the Sonos app.
4 Zones
8 Amplified Outputs
Mono / Stereo configurable per output
GaN + PFFB • Fanless convection
WiFi 6 + Ethernet
ProTune™ (manual tuning) • No Trueplay
Pre-Order Sonos Amp Multi (Google Form)
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Ideal for: distributed audio racks, high-zone-count homes, MDU, and commercial background music where clean wiring, scalable zoning, and predictable thermal planning matter.
Efficiency + reliability
GaN + fanless convection cooling
Designed for rack density: high efficiency, less wasted heat, and no fan noise/dust/failure point.
Commissioning + performance
ProTune™ + Optimize Sonos Speakers
Manual, per-output tuning for low-impedance passive speakers and real rooms. With Sonos Architectural speakers, enable Optimize Sonos Speakers for custom tuning/DSP.
Design flexibility
Outputs assignable to match real rooms
Allocate more outputs to big zones and fewer to small zones—without “one amp per stereo pair” constraints.
System design: outputs → zones → streams
Assign the eight amplified outputs across up to four zones. When configured as four zones, each zone can run its own stream (AirPlay 2 / Spotify Connect / Sonos app playback).
Scaling math (fast)
- Per unit: up to 4 zones
- System max: 32 zones total (example: 8 units × 4 zones = 32)
- Max units in a single zone: up to 16 units when wired via Ethernet (subject to overall 32-zone max)
“When fewer zones” rule
- Fewer zones configured → fewer concurrent stream options visible
- Example: single large zone → single AirPlay 2 option
Sub strategy (dealer quick rule)
- One Sonos Sub per zone (up to 4 total: Sub 4 / Sub (Gen 3) / Sub Mini)
- The subwoofer output port supports a powered third-party sub and can be assigned to a zone in the Sonos app
- Assign in app: Zone Settings → Connect Sub
When you need HDMI
Amp Multi is purpose-built for distributed audio. For TV/home theater HDMI connectivity, use Sonos Amp or a Sonos soundbar (and they can coexist with Amp Multi in the same system).
Installer’s Edge Specs (dealer-friendly)
| Amplifier | Class D with GaN transistors + post-filter feedback (PFFB) |
| Power output | 125W RMS continuous per channel @ 8Ω (all channels driven) |
| Outputs | 8 amplified outputs; each independently configurable mono or stereo |
| Zones | Up to 4 independent zones per unit |
| Minimum impedance | 2.67Ω with Sonos Architectural speakers |
| Damping factor | ~437 typical (8Ω) • > 400 (ref. 8Ω, 20Hz–1kHz) |
| Tuning | ProTune (manual) • 10-band parametric EQ per output • No Trueplay |
| Networking | WiFi 6 + Ethernet (single Ethernet port) |
| Bluetooth | Not supported |
| Controls | No physical playback/volume controls (Sonos app control) |
| Warranty | 3-year warranty |
Notes: No bridging or power sharing across outputs. USB does not play audio from storage devices; USB is only compatible with the Sonos Line-In Adapter (sold separately).
Connectivity & wiring (what installers ask first)
Speaker connections
- Banana plugs recommended for best sound quality and reliability
- Includes custom-designed banana plugs; works with standard banana plugs
- Supports 10–18 AWG speaker wire direct-connect if preferred
- Speaker disconnection is indicated on the back of the unit and in the Sonos app
Inputs / sub
- 2× RCA line-in (-10 dB), assignable to zones in the app
- USB-C is only compatible with the Sonos Line-In Adapter (sold separately)
- Subwoofer output can be assigned to a zone in the app
- One Sonos Sub per zone (up to 4 total)
Network notes
- Single Ethernet port (no daisy-chain)
- WiFi 6 compatible
- AirPlay 2 supported
Rack & airflow (1.5U device • 2U airflow with Rack Mount)
Why 1.5U?
Amp Multi shares the same 1.5U height as Sonos Amp for consistency when mixing device types.
Rack Mount (sold separately)
Rack Mount adds clearance above and below for airflow and service access—total height 2U.
Rack Mount SKU: RKMTAWW1BLK • UPC: 840136815587
Non-rack ventilation
Allow at least 4 inches (10 cm) of clearance on the top and sides for proper airflow.
Thermal & power planning (spec-sheet excerpt)
Operational behavior
No user-invoked standby mode. Amp Multi is designed for distributed audio where instant playback is essential. When not in use, it automatically enters idle behavior to reduce energy.
Waste heat reference table (W / BTU/hr)
| Condition | 115 VAC | 240 VAC |
| Idle (WiFi disabled) | 4.3 W • 14.66 BTU/hr | 5.28 W • 18.00 BTU/hr |
| 1/8 power (pink noise), 8Ω | 38.56 W • 131.48 BTU/hr | 41.40 W • 141.17 BTU/hr |
| Full power (pink noise), 2.67Ω | 101.15 W • 344.93 BTU/hr | 96.15 W • 327.88 BTU/hr |
Use these figures for rack heat-load planning; for full thermal characterization across loads and conditions, reference the complete spec sheet.
Dealer Resources
Downloads & spec’ing documents
Download Sell Sheet (PDF)
Download Spec Sheet (PDF)
Download Solution Guide (PDF)
Residential Solution Guide (PDF)
Need a design review?
For complex multi-zone or high speaker-count designs, request support and we’ll help validate output allocation, zone grouping, and rack airflow planning.
Dealer FAQ
Commissioning, limits, edge cases
Power, audio & tuning
What is the warranty length for Amp Multi?
Amp Multi comes with a 3-year warranty.
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?
Approximately 437 with an 8-ohm speaker. (Spec reference: >400 ref. 8Ω, 20Hz–1kHz.)
Does Amp Multi support Trueplay?
No. Amp Multi introduces ProTune—a manual tuning feature. When used with Sonos Architectural speakers, enabling Optimize Sonos Speakers applies custom tuning and DSP tailored to their acoustic design.
Setup, rack & installation
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.
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. The Rack Mount (sold separately) adds an extra 0.25U above and below—total 2U—for airflow and easier access.
Why doesn’t the Rack Mount include additional rack screws?
To avoid waste and stay aligned with sustainability goals, only the screws needed to secure Amp Multi to the Rack Mount are provided.
Can Amp Multi be reverse rack mounted?
No. The Rack Mount attaches using mounting holes on the front underside of the unit and cannot be reversed.
Does Amp Multi offer rear rack support?
No. Amp Multi’s design does not require additional rear support in the rack.
Connectivity, subs & ecosystem
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?
One Sonos Sub per zone, up to four total (Sub 4, Sub (Gen 3), Sub Mini). The subwoofer output port supports a powered third-party sub, assignable to a zone in the app.
Why doesn’t Amp Multi include HDMI like Sonos Amp?
Amp Multi is purpose-built for distributed audio. If you need HDMI for TV/home theater, Sonos Amp or a Sonos soundbar is the best fit—and works alongside Amp Multi in the same system.
Why does Sonos Amp have two Ethernet ports, while Amp Multi only has one?
Sonos Amp includes two ports for daisy-chaining multiple units (up to four zones). Amp Multi’s design eliminates the need for extra ports while simplifying installation.
How do the audio stream inputs work, and how many AirPlay 2 connections are supported?
Each zone can utilize a separate source or stream. If configured for four zones, each zone can support its own AirPlay 2 stream, Spotify Connect session, or Sonos app playback.
If I configure Amp Multi for fewer zones, will I see fewer AirPlay 2 options?
Yes. The number of zones you configure determines the number of concurrent streams available.
Is Bluetooth® supported?
No, Amp Multi does not include Bluetooth connectivity.
Wiring, controls & power
Do I need to use the included banana plugs, or can I connect speaker wire directly?
Banana plugs are recommended for best results. Amp Multi includes custom banana plugs and works with standard banana plugs. You can also connect 10–18 AWG speaker wire directly.
Does Amp Multi detect when speakers are disconnected?
Yes. Speaker disconnection is indicated both on the back of the unit and in the Sonos app.
Can I bridge channels or share power across outputs?
No. Amp Multi does not support bridging or power sharing across channels.
Does Amp Multi have playback or volume controls like Sonos Amp?
No. All controls are managed through the Sonos app.
Does Amp Multi include a standby mode?
No traditional standby mode. It’s designed for instant playback in distributed audio and automatically enters idle behavior to save energy.
Can I turn off the status lights?
Yes. You can turn off the status lights in the Sonos app.
Is Amp Multi Energy Star rated?
No, Amp Multi is not Energy Star certified.
Can I use the USB connector to play audio files from a USB drive?
No. The USB port does not support direct audio playback. It is only compatible with the Sonos Line-In Adapter (sold separately).
Accessories & mounting limits
Is there an on-wall tray accessory for Amp Multi?
No. If installing inside a structured media enclosure, allow several inches of clearance on top and sides for airflow.
Scaling limits (system & zone)
What is the maximum number of Amp Multi units you can have in a system?
Maximum system size is 32 zones total. Examples: 8 units configured as 4 zones each = 32 zones; up to 32 units if each is configured as a single zone (or any mix, as long as total zones ≤ 32).
What is the maximum number of Amp Multi units you can have in a zone?
Up to 16 Amp Multi units in a single zone when wired via Ethernet (within the 32-zone system limit).
Responsible by Design
Built for longevity and serviceability with sustainability-minded packaging and materials. Fanless convection cooling and low idle power help reduce heat in dense racks.
47% recycled plastic
100% recyclable packaging
Serviceable design (screws, no adhesives)
Ready to spec it?
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Spec / Sell Sheets
Spec / Sell Sheets
