Sonos Amp Multi 8-Channel Professional Amplifier

Experience professional-grade multi-zone audio like never before with the Sonos Amp Multi — the most advanced amplifier Sonos has ever built. Featuring cutting-edge GaN and PFFB amplifier technologies, Amp Multi delivers 8 x 125W of power across up to four independent zones. Designed specifically for custom installations, it includes ProTune manual calibration tools like a 10-band parametric EQ, delay offsets, and gain trimming, allowing fine-tuned control of every output channel. The compact, thermally-optimized 2U chassis is built for fanless, rack-friendly installs with effortless cable management and professional-grade durability. Whether you’re integrating with smart home platforms or optimizing a premium in-ceiling speaker system, the Amp Multi brings next-level flexibility, efficiency, and sonic performance to your custom installs.

Specifications

• Amplifier Outputs: 8 amplified outputs, each independently configurable for stereo or mono
• Power Output: 125W per channel @ 8Ω (FTC rated, all channels driven)
• Zones: Up to 4 audio zones supported
• Minimum Impedance: 2.67Ω with Sonos Architectural speakers
• Damping Factor: >400 (ref. 8Ω, 20Hz–1kHz)
• Amplifier Type: Class D with Gallium Nitride (GaN) and Post-Filter Feedback (PFFB)
• Total Harmonic Distortion (THD): 0.005% at 2.83Vrms–15Vrms
• Frequency Response: ±0.5 dB, 15Hz–20kHz
• Channel Separation: -100dB at 1kHz, -80dB at 10kHz
• Signal-to-Noise Ratio: 114dB (ref. 125W into 8Ω)
• ProTune Manual Controls: 10-band parametric EQ, ±15dB gain, delay (0–50ms), high-pass filter (15–100Hz)
• Optimize Sonos Speakers: Auto-detect and DSP-tuning for Sonos Architectural speakers
• Networking: Ethernet, WiFi 6
• Streaming Support: Apple AirPlay 2
• Form Factor: 2U rack-mountable, fanless design
• Energy Use: <5.5W idle consumption, eco standby features
• Build: Thermally-optimized chassis with recessed connectors and status LEDs
• Materials: 47% recycled plastics
• Packaging: 100% recyclable FSC-certified paper packaging

What It's Great At

The Sonos Amp Multi excels at high-performance, multi-zone audio distribution for professional installs. With advanced amplification technology, extensive manual tuning controls, and optimized support for Sonos Architectural speakers, it delivers crystal-clear audio with precise control in any space. Its sleek, rack-friendly build and low-power design make it ideal for integrators looking for a reliable, flexible, and sustainable audio solution.

Expanded Key Features List

• 8 x 125W Output: Drives up to 4 stereo or 8 mono channels at full power across multiple zones.
• ProTune Calibration Suite: Includes parametric EQ, gain trim, high-pass filtering, and delay offsets per channel.
• GaN & PFFB Amplification: Enables superior audio clarity, low distortion, and power efficiency in a compact form.
• Rack-Optimized Design: 2U height with fanless cooling, recessed connections, and improved airflow for clean installs.
• Optimize Sonos Speakers: Automatically tunes Sonos Architectural speakers for ideal performance and stability.
• Low Idle Power Consumption: Consumes under 5.5W at idle with advanced thermal and power management.
• WiFi 6 & Ethernet Connectivity: Supports high-speed networking for seamless system integration.
• Apple AirPlay 2: Allows wireless streaming from Apple devices directly to any zone.
• Sustainable Materials: Built with 47% recycled plastics and packaged in recyclable FSC-certified materials.
• Flexible Zone Configuration: Assign any speaker output to any zone independently for total system control.

Q&A Section

Q: How many zones can the Amp Multi support?
A: It supports up to four stereo zones, with each of the eight outputs independently assignable for flexible system design.

Q: What is GaN technology and why does it matter?
A: GaN (Gallium Nitride) transistors offer more efficient, high-frequency switching, delivering superior audio performance with less heat and lower power consumption.

Q: Can I fine-tune the sound for each speaker?
A: Yes, ProTune provides a 10-band EQ, gain trim, high-pass filtering, and delay settings for each channel to tailor performance to room acoustics.

Q: Is Amp Multi compatible with Sonos Architectural speakers?
A: Absolutely. When detected, Amp Multi automatically optimizes tuning and DSP settings for improved sound and reliable operation.

Q: Does it support wireless streaming?
A: Yes, Amp Multi supports Apple AirPlay 2, enabling wireless audio streaming from Apple devices to any zone.

Q: How energy efficient is Amp Multi?
A: It uses less than 5.5W at idle and includes additional software enhancements to reduce energy use during playback and standby.

Q: Can it be installed in a professional rack?
A: Yes, the Amp Multi is designed for 2U rack mounting with recessed connectors and airflow-optimized spacing for streamlined installation.

Q: Is there fan noise?
A: No. Amp Multi uses a fanless, thermally-optimized chassis to maintain silent operation even under load.

Downloads:

Sonos Multi Amp Specifications Sheet