Amp Multi

Amp Multi delivers 8 x 125W of power across up to four zones, leveraging advanced GaN technology and post-filter feedback (PFFB) for greater efficiency, clarity, and control. With ProTune, installers can optimize the sound for any low-impedance passive speakers, tailoring performance to placement and room acoustics. ProTune offers a full suite of manual controls, including a 10-band parametric EQ plus adjustable gain and delay offsets, enabling truly bespoke audio experiences. Its innovative chassis design enhances thermal performance, while recessed connectors, status LEDs, and a streamlined 2U rack mount simplify setup and ensure reliable, fanless cooling.

Multi-zone capability
Power up to four independent zones with eight assignable outputs. Each output can be freely configured to suit room layouts, speaker counts, and wiring needs.

Powerful and flexible
With 125 watts per channel into 8 ohms, Amp Multi powers high-performance passive speakers across up to four stereo zones. This means four times the coverage compared to Amp, with consistent output even under complex loads.

Innovated from the inside and out
Advanced GaN technology, Class D amplification, and post-filter feedback (PFFB) deliver exceptional audio quality with high efficiency. Its textured, thermally-optimized chassis enhances performance and durability all within a compact design built for the rack.

Smart outputs
Configure multiple zones with assignable outputs and real-time LED feedback. Amp Multi detects when a speaker is connected and displays clear status indicators to simplify setup and troubleshooting.

Manually tune each output
With ProTune, you can optimize the sound for the placement and room acoustics of any low-impedance passive speakers. This feature offers a comprehensive set of manual controls, including a 10-band parametric EQ and adjustable gain and delay offsets.

Ready to rack
The optional 2U Rack Mount streamlines installations by minimizing wasted space, optimizing airflow, and supporting clean cable management. Simply slide Amp Multi into place and secure it with just eight screws.
 

Audio

Power 8 x 125W into 8 Ohms Measured as continuous power output (RMS) into 4Ω, with <1% total harmonic distortion (THD)

Amplifier technology Class D digital using GaN transistors

Minimum Load Impedance 2 Ohms

Total Harmonic Distortion (THD) 0.x%

Frequency Response x Hz to x kHz

Channel Separation (Crosstalk) x dB

Adjustable EQ X band parametric equalizer per output with XdB range and width control

Loudspeaker presets Preset eq curves for Sonos loudspeakers

Optimize Speakers When selected in the Sonos app, Optimize Sonos Speakers allows Amp Multi to recognize Sonos Architectural speakers then applies custom tuning and DSP to provide more robust sound with a more even frequency response, optimizing system performance and ensuring stable operation.

Noise level xx dBA (@1m)

 

Details + Dimensions

Dimensions

Unit on its own Height: 2.52 in (64 mm) Width: xx in (xx mm) Depth: xx in (xx mm)

Including optional 2U rack mount unit Height: xx in (xx mm) Width: xx in (xx mm) Depth: xx in (xx mm)

 

Power + Connectivity

Ethernet port 100Base-T network connection

Power 100-240V 50/60Hz internal power supply XA

Thermal Output 100BTU/hr

WiFi Compatible with WiFi 6. Connect to WiFi with any 802.11a/b/g/n/ac/ax 2.4 GHz/5 GHz broadcast-capable router.

Analog audio input 2 x RCA inputs -10dB (stereo into one zone)

USB-C digital audio input 44.1 kHz, 48 kHz / 16, 24 bit (stereo into one zone)

Apple AirPlay 2 Up to 4 Airplay 2 inputs (one per zone) Works with AirPlay 2 on Apple devices iOS 11.4 and higher

Amplifier outputs Custom-designed banana plugs that can be swapped for standard diameter banana plugs.

Sub bass output 1 x RCA output -10dB (configurable to output from one zone)

 

Box Contents

Amp Multi amplifier

Documentation Quickstart Guide and legal/warranty information

 

Requirements

Internet connection

Ethernet connection or WiFi Ethernet needs Category 5 (CAT5) cable or higher

Sonos app The latest generation of the Sonos app running on a compatible device

Certifications and Compliance XX XX XX XX

 

Accessories
 

2U Rack Mount

Set of (8) custom threaded standard-diameter banana plugs