{"product_id":"matrix-audio-si-1-network-isolator","title":"Matrix Audio SI-1 Network Isolator","description":"\u003ch1\u003e\u003cstrong\u003eNetwork noise isolator\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Matrix Audio SI-1 is an active audio-grade network isolator designed to reduce electrical noise and interference between network equipment and high-resolution audio components. Dual-channel optical-electrical isolation, two femtosecond clocks, a linear power supply, and dual Gigabit Ethernet ports provide a carefully controlled connection for network streamers, music players, and DACs.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eActive network isolation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SI-1 uses active optical-electrical isolation to separate connected network devices electrically. This architecture helps block electromagnetic interference generated by routers and network switches while breaking ground loops caused by differences in grounding potential between components.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eIndependent optical transmission\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSeparate optical channels handle sending and receiving data independently. Keeping these transmission paths isolated helps reduce crosstalk while maintaining signal integrity across the network connection.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDual femtosecond clocks\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTwo femtosecond clocks provide precise timing within the SI-1 network architecture. Matrix Audio combines this clocking system with optical transmission to minimize timing errors and support consistent data transfer for demanding network audio systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eLinear power supply\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA dual-winding potted toroidal transformer and multiple low-dropout regulators provide stable power to the SI-1 circuitry. The linear supply is designed to keep electrical noise under control throughout the isolation and transmission stages.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eGigabit Ethernet connectivity\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SI-1 provides two RJ45 Ethernet ports supporting 10 Mbps, 100 Mbps, and 1 Gbps connections. One port accepts the network input while the second provides the photoelectrically isolated output. The ports are physically separated, and the isolated output incorporates an electrical isolation washer to reinforce separation between connected devices.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eElectrical protection\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBy eliminating direct electrical continuity across the network connection, the SI-1 provides an additional layer of separation between network infrastructure and connected audio equipment. Its isolation architecture is designed to help protect equipment from electrical disturbances including surges, electrostatic discharge, and noise carried through interconnected devices.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCNC aluminum enclosure\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SI-1 uses a CNC-machined unibody aluminum enclosure consistent with Matrix Audio’s industrial design. The metal chassis provides a rigid housing while helping shield the internal circuitry from external electromagnetic interference.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eClear status indicators\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFront-panel LEDs provide power and network link status at a glance. Additional Ethernet indicators on the rear panel display speed, link, and activity information.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSwitchable Ethernet LEDs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe rear Ethernet port LEDs can be switched off when visual distractions are undesirable. This is useful in dedicated listening rooms and other low-light installations where unnecessary indicator lighting can be distracting.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eActive optical-electrical network isolation\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDual-channel independent optical transmission\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwo femtosecond clocks\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLinear power supply with dual-winding potted toroidal transformer\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMultiple LDO voltage regulators\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOne standard RJ45 network input\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOne photoelectrically isolated RJ45 output\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e10 Mbps, 100 Mbps, and 1 Gbps Ethernet support\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitchable rear Ethernet LEDs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFront-panel power and link indicators\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCNC unibody aluminum enclosure\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2K MAC address table\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNetwork standards: IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-X, IEEE 802.3z, IEEE 802.3ab 1000BASE-T\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNetwork input: 1 x RJ45, 10 Mbps\/100 Mbps\/1 Gbps\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIsolated network output: 1 x RJ45, 10 Mbps\/100 Mbps\/1 Gbps with photoelectric isolation\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFront indicators: 1 x power status LED, 2 x link status LEDs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear indicators: 2 LEDs per LAN port for speed, link, and activity\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMAC address table: 2K entries\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower voltage: AC 100–120 V, 50\/60 Hz or AC 220–240 V, 50\/60 Hz, factory-fixed\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower consumption: Less than 15 W\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 4.72 in W x 8.07 in D x 1.73 in H (120 mm x 205 mm x 44 mm)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 3.39 lb (1.54 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatrix Audio SI-1 network isolator\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUser manual\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty card\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Matrix Audio","offers":[{"title":"Default Title","offer_id":48148899823852,"sku":"APS-1407-1","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/matrix-0-si-1-thumb_webp.jpg?v=1786460892","url":"https:\/\/apos.audio\/products\/matrix-audio-si-1-network-isolator","provider":"Apos","version":"1.0","type":"link"}