Sonos Amp Multi – 4-Zone / 8-Channel Smart Streaming Amplifier – 8 x 125W
DETAILS
Power and control multiple audio zones with precision using the Sonos Amp Multi 4-Zone / 8-Channel Smart Streaming Amplifier.
The Sonos Amp Multi is a professional-grade, multi-zone streaming amplifier designed to simplify complex audio installations while delivering exceptional sound quality. Offering eight amplified channels at 125W per channel, Amp Multi can power up to four independent zones, making it ideal for commercial environments and larger residential projects requiring flexible, scalable audio control.
Built around advanced GaN (Gallium Nitride) Class-D amplification with post-filter feedback (PFFB), Amp Multi delivers outstanding efficiency, accuracy, and control across a wide range of speaker loads. This highly efficient design reduces heat generation, consumes just 5.4W at idle, and enables fanless operation for improved reliability and silent performance in rack-mounted installations.
True Multi-Zone Flexibility
Each of the eight outputs can be freely assigned to any zone, allowing installers to design truly bespoke audio systems. Stream up to four audio sources simultaneously using the Sonos app, Apple AirPlay 2, or Spotify Connect, with content delivered independently to each zone for a seamless multi-room experience.
Optimised Sound with ProTune and Sonos Architectural Integration
Amp Multi includes ProTune, a powerful suite of professional tuning tools available on a per-channel basis. This includes a 10-band parametric EQ, adjustable gain, delay offsets, and high-pass filtering, allowing precise optimisation for speaker placement and room acoustics. When paired with Sonos Architectural speakers, Amp Multi automatically applies custom DSP tuning to ensure stable operation and a smooth, balanced frequency response.
Designed for Professional Installation
Purpose-built for the rack, Amp Multi features a thermally optimised chassis, recessed rear connections, and intelligent status LEDs that automatically adjust brightness to the room’s lighting. The optional 2U Rack Mount (sold separately) is engineered specifically for Amp Multi, creating airflow above and below each unit for reliable fanless cooling while eliminating the need for vent panels.
Setup is fast and intuitive using the Sonos app, with an audible identification chirp for easy unit recognition — no PINs required. Whether installed in a rack, mounted on a wall, or placed on a shelf, Amp Multi combines refined aesthetics with professional-grade performance.
Key Features of the Sonos Amp Multi:
- 4-Zone / 8-Channel Design: Power up to four independent audio zones from a single amplifier
- 8 x 125W Output Power: High-performance amplification with all channels driven at 8Ω
- Advanced GaN Technology: Greater efficiency, lower heat output, and improved long-term reliability
- Post-Filter Feedback (PFFB): Real-time signal correction for superior clarity and control
- ProTune Sound Optimisation: 10-band parametric EQ, gain, delay, and filtering on a per-channel basis
- Optimise Sonos Architectural Speakers: Automatic DSP tuning for enhanced performance and stability
- Fanless, Rack-Ready Design: Silent operation with optional purpose-built 2U rack mount
- Multi-Source Streaming: Stream up to four sources simultaneously via Sonos app, AirPlay 2, or Spotify
- Wired & Wireless Networking: Ethernet and WiFi 6 connectivity for flexible installation
- Professional Status Monitoring: Intelligent LEDs for device, output, and network status
SPECS & DOWNLOADS
Sonos Amp Multi Specifications:
- Brand: Sonos
- Model: Amp Multi
- Amplifier Type: Class D with GaN and PFFB
- Zones: Up to 4
- Channels: 8
- Power Output: 125W per channel @ 8Ω (all channels driven)
- Minimum Impedance: 2.67Ω (with Sonos Architectural speakers)
- Damping Factor: >400 (8Ω, 20Hz–1kHz)
- Total Harmonic Distortion: 0.005% (2.83–15Vrms)
- Frequency Response: ±0.5dB, 15Hz–20kHz
- Signal-to-Noise Ratio: 114dB (ref. 125W into 8Ω)
- Channel Separation: -100dB @ 1kHz / -80dB @ 10kHz
- ProTune: 10-band parametric EQ, gain trim, delay, high-pass filter (per channel)
- Analogue Inputs: 2 x RCA (-10dB, stereo into one zone)
- USB-C Line Input: 44.1kHz / 16-bit (requires Sonos Line-In Adapter)
- Subwoofer Output: 1 x RCA (-10dB, assignable to one zone), plus 1 x Sonos Sub per zone
- Streaming Formats: Apple AirPlay 2, Spotify Direct Control, Sonos app
- Ethernet: 100Base-TX RJ45
- WiFi: WiFi 6 (802.11a/b/g/n/ac/ax 2.4GHz / 5GHz)
- Power Consumption: 5.4W idle / 180W at 1/8 power (all channels driven)
- Power Supply: 100–240V AC, 50/60Hz
- Dimensions (Unit): 436.8 x 265.2 x 64.5 mm (WxDxH)
- Dimensions (With Rack Mount): 483 x 265.2 x 82.3 mm (WxDxH)
- Weight: 5.06 kg
- Colour: Black
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Finish: Matte
What’s in the Box:
- Sonos Amp Multi
- Power Cable (2m)
- Sonos Banana Plugs (Set of 8)
- Quickstart Guide & Documentation
