Matrix audio si-1 audio grade network isolator

Matrix Audio SI-1 Audio Grade Network Isolator is a premium accessory meticulously crafted for Hi-Fi enthusiasts who pursue sonic purity. As a key extension of the Matrix Audio ecosystem, SI-1 not only carries forward the brand’s consistent commitment to precision engineering, but also unlocks new possibilities for cleaner signal paths in streaming audio systems. Working in synergy with other components, it elevates overall system performance, actively raising the ceiling of sound quality and reinforcing the very foundation of audio reproduction.

Matrix Audio SI-1 Audio Grade Network Isolator

A Pure Soundscape

Preserving Sonic Authenticity

Matrix Audio SI-1 Audio Grade Network Isolator is a premium accessory meticulously crafted for Hi-Fi enthusiasts who pursue sonic purity. As a key extension of the Matrix Audio ecosystem, SI-1 not only carries forward the brand’s consistent commitment to precision engineering, but also unlocks new possibilities for cleaner signal paths in streaming audio systems. Working in synergy with other components, it elevates overall system performance, actively raising the ceiling of sound quality and reinforcing the very foundation of audio reproduction.

Precision Matching

A Tribute to Pure Passion

SI-1 pays tribute to every Hi-Fi light-seeker with a heart of pure sincerity. Designed to complement Matrix Audio streamers, it resonates with the audiophile’s quest for absolute purity. As the optical masterstroke in your system’s evolution, it ensures that every passion for superior sound is brilliantly realized.

A Cleaner Sonic Foundation

The Matrix Audio SI-1 Audio Grade Network Isolator features active optical-electrical isolation technology, effectively blocking electromagnetic interference generated by routers and network switches. By purifying network noise that can interfere with audio signals, it also breaks ground loops and prevents current noise caused by grounding potential differences between devices. The result is a deeply “black” background, allowing music to emerge with greater clarity and purity.

Front LED indicators

The LED indicators on the front-panel displays the status of the device clearly.

Switchable LEDs on the Ethernet port

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The rear-panel Ethernet port LEDs can be switched on or off to eliminate light pollution—demonstrating careful consideration for real listening environments and uninterrupted musical immersion.

Precision Matching A Tribute to Pure Passion​

SI-1 pays tribute to every Hi-Fi light-seeker with a heart of pure sincerity. Designed to complement Matrix Audio streamers, it resonates with the audiophile’s quest for absolute purity. As the optical masterstroke in your system’s evolution, it ensures that every passion for superior sound is brilliantly realized.

CNC unibody aluminum enclosure

The SI-1 continues the Matrix Audio’s family industrial design language, featuring a CNC unibody aluminum enclosure that not only delivers a premium touch, but also enhances shielding against external interference.​

Attentive Protection

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Equipped with dual 1Gbps RJ45 ports (one input and one isolated output), SI-1 adopts a physically separated layout. The output port incorporates an electrical isolation washer, reinforcing signal integrity while significantly reducing transmission errors and completely cutting off electrical continuity between devices. Whether facing lightning strikes, power surges, electrostatic discharge, or persistent noise from the power mains, SI-1 forms a robust protective barrier for high-value digital audio equipment such as network streamers, music players and DACs—ensuring peace of mind and uninterrupted listening enjoyment.

Linear power supply

Linear power supply with dual-winding potted toroidal transformer and multiple LDOs

Precision in Every Detai

A dual-channel optical transmission architecture enables independent sending and receiving paths, eliminating mutual interference at the source and preventing signal crosstalk. Two femtosecond clocks, combined with a linear power supply by a dual-winding toroidal transformer and multiple LDOs, ensure stable and clean power delivery. This design ensures data integrity, reduces transmission errors and jitter, improves timing accuracy, and allows musical details to be rendered with exceptional precision.

Specifications

Standards and Protocol

IEEE 802.3：10BASE-T

IEEE 802.3 u：100BASE-X

IEEE 802.3 z：1000BASE-T

IEEE 802.3 ab：1000BASE-T

Ports

1 x 1Gbps/100Mbps/10Mbps RJ45

1 x 1Gbps/100Mbps/10Mbps RJ45 （Photoelectric isolation）

LED Indicators

There is one LED for power status on the front panel.

There are two LEDs for link status on the front panel.

On the back panel, each LAN Port has 2 LEDs for speed, link & activity.

Max MAC entries

2K MAC address table

Power Specs

Power Voltage AC 100V-120V 50/60Hz or AC 220V-240V 50/60Hz, factory-fixed

Power Consumption < 15W

Weight & size

Weight: 1.54kg (3.39pounds)

Dimensions Width: 120mm (4.72inches)

Depth: 205mm (8.07inches)

Height: 44mm (1.73inches)

Accessories

Power cable *1

User manual *1

Warranty card *1

For improvement purpose, specifications subject to changes without prior notice.

Matrix Audio

History

It was the summer holiday of 2001 in Xi’an, a beautiful ancient city with profound cultural history where 3 high school classmates worked together to build their first speakers. Their love for music and their enthusiasm for the audio equipment hobby laid the foundation for a lifetime of friendship.

At the beginning of 2006, these 3 classmates graduated from their universities and decided to start working together to build new audio devices. They used their technical knowledge to create their first “decent quality” DAC. They enjoyed music, they enjoyed life, and they also enjoyed the sense of achievement and pride that came with designing and building audio equipment. Soon to follow, the idea of starting a brand and making audio products came to mind.「Matrix Audio」was born!

As a new starting point, they established Matrix Electronic Technology Co., LTD in Xi’an, and registered the trademark: Matrix Audio

Brand Concept

The brand name is derived from the mathematical concept “matrix”. Matrix is built by portrait and landscape, we name the brand “matrix” because we are looking for the balance between the 2 dimensions. We examine audio products from listening and looking so we also incorporated this concept into our designs. All of our products not only have excellent audio performance, but also incorporate great designs that can integrate into the home environment. Harmony is the goal of our continuous efforts.