{"title":"In-Line Noise Filters","description":null,"products":[{"product_id":"ifi-idefender-ground-loop-eliminator","title":"iFi iDefender+ Ground Loop Eliminator","description":"\u003ch2\u003eStop USB Ground-Loop Hum at the Source\u003c\/h2\u003e\u003cp\u003eThe iFi iDefender+ is a compact inline USB accessory designed to address one specific but frustrating problem: audible hum or buzz caused by a ground loop between a computer and a USB-connected audio component. When it detects multiple ground paths, the iDefender+ interrupts the computer-side ground while maintaining the USB data connection. This can remove the unwanted loop without requiring changes to the safety grounding of the rest of the audio system.\u003c\/p\u003e\u003cp\u003eGround-loop noise often appears after a computer, powered DAC, amplifier, active speakers, or other grounded component is added to a system. The result may be a steady low-frequency hum, buzzing that changes with computer activity, or noise that disappears when one cable is disconnected. The iDefender+ is intended for that situation; it is not a general-purpose tone control or a repair for defective equipment.\u003c\/p\u003e\u003ch3\u003eOptional External Power for Bus-Powered DACs\u003c\/h3\u003e\u003cp\u003eIf the connected DAC normally receives power from the computer's USB port, connect a suitable low-noise 5-volt supply to the iDefender+'s USB-C power input. The accessory then blocks the computer's USB power and substitutes the external supply while leaving the data path intact. A self-powered DAC normally does not need this additional connection. Maximum supported external power is 5V\/1A, and the unit is not intended for USB Power Delivery charging.\u003c\/p\u003e\u003ch2\u003eWho Is This In-Line Filter Best For?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eListeners who hear hum or buzz after connecting a computer to a USB DAC.\u003c\/li\u003e\n\u003cli\u003eDesktop-audio systems using powered speakers, headphone amplifiers, or grounded components.\u003c\/li\u003e\n\u003cli\u003eMusic servers and computers sharing power or signal grounds with a hi-fi system.\u003c\/li\u003e\n\u003cli\u003eBus-powered DAC owners who want to substitute a clean external 5V supply.\u003c\/li\u003e\n\u003cli\u003eInstallers troubleshooting a confirmed USB ground loop.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is less likely to help with hiss from amplifier gain, mechanical transformer hum, damaged cables, wireless interference, or noise that remains when the USB cable is removed. Diagnose the source before changing connections.\u003c\/p\u003e\u003ch2\u003eHow (and Where) Does It Connect to Your System?\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003ePower down or mute the audio system.\u003c\/li\u003e\n\u003cli\u003eInsert the iDefender+'s male USB connector into the computer, server, or source USB port.\u003c\/li\u003e\n\u003cli\u003eConnect the existing USB audio cable to the female USB socket on the iDefender+.\u003c\/li\u003e\n\u003cli\u003eConnect the other end of that cable to the DAC or USB audio device.\u003c\/li\u003e\n\u003cli\u003eFor a bus-powered DAC, attach an appropriate 5V supply to the side USB-C power input.\u003c\/li\u003e\n\u003cli\u003eRestore power and compare the system with the filter installed.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eThe listing shown is the USB-A version. iFi also manufactures other connector arrangements, so verify the source port and cable before ordering. USB 3.0 operation is supported and the device is backward-compatible with USB 2.0.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWill it improve every USB audio system?\u003c\/h3\u003e\u003cp\u003eNo. Its primary purpose is eliminating a USB ground loop and optionally replacing noisy computer power. A system without either problem may show little or no change.\u003c\/p\u003e\u003ch3\u003eDoes it disconnect the USB data signal?\u003c\/h3\u003e\u003cp\u003eNo. USB data continues between the source and DAC; the device changes the grounding and, when external power is used, the power arrangement.\u003c\/p\u003e\u003ch3\u003eDo I need an external power supply?\u003c\/h3\u003e\u003cp\u003eUsually not with a self-powered DAC. A bus-powered DAC may require a compatible 5V supply connected to the iDefender+.\u003c\/p\u003e\u003ch3\u003eCan I use a USB-C Power Delivery charger?\u003c\/h3\u003e\u003cp\u003eNo. Use a suitable standard 5V supply within the 1A maximum rating rather than a USB-PD arrangement.\u003c\/p\u003e\u003ch3\u003eIs it safe to remove the AC safety ground from my amplifier?\u003c\/h3\u003e\u003cp\u003eNo. Never defeat a component's protective-earth connection. The iDefender+ is designed to work in the USB signal path without altering equipment safety grounding.\u003c\/p\u003e","brand":"iFi Audio","offers":[{"title":"New","offer_id":45983365791917,"sku":"NEW-IFIDEFP","price":59.0,"currency_code":"USD","in_stock":true},{"title":"Demo","offer_id":45983365824685,"sku":"DEMO-IFIDEFP","price":29.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/IFIDEFP_USB_A_01_2024__73708.1707314125.1280.1280_35fe279b-b4db-42d8-aaa5-d67689f648cd.jpg?v=1778131583"},{"product_id":"ifi-lan-isilencer","title":"iFi LAN iSilencer","description":"\u003ch2\u003eReduce Electrical Noise on a Wired Network Connection\u003c\/h2\u003e\u003cp\u003eThe iFi LAN iSilencer is a passive inline Ethernet filter for network streamers, music servers, computers, smart televisions, and other RJ45-equipped components. It is designed to reduce electrical noise and ground-related interference traveling through a copper network connection before that noise reaches sensitive audio circuitry. The compact device combines galvanic isolation, radio-frequency filtering, a shielded enclosure, and transient-voltage suppression without requiring software or a separate power supply.\u003c\/p\u003e\u003cp\u003eEthernet data is digital, but the cable and attached hardware remain electrical connections. Routers, switches, computer power supplies, and long cable runs can introduce radio-frequency energy or differences in ground potential. The LAN iSilencer separates the input and output grounds and filters unwanted high-frequency energy while preserving the network connection. It supports 10BASE-T, 100BASE-T, and 1000BASE-T Gigabit Ethernet.\u003c\/p\u003e\u003ch2\u003eWho Is This In-Line Filter Best For?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNetwork-streaming systems connected by copper Ethernet.\u003c\/li\u003e\n\u003cli\u003eListeners whose router or network switch shares space with audio equipment.\u003c\/li\u003e\n\u003cli\u003eSystems with long Ethernet runs or several powered network devices.\u003c\/li\u003e\n\u003cli\u003eMusic servers, streamers, smart TVs, and computers with an available RJ45 port.\u003c\/li\u003e\n\u003cli\u003eInstallers seeking a passive, plug-and-play network-noise treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe LAN iSilencer is not a network extender, Wi-Fi booster, switch, surge protector for the entire system, or substitute for repairing a faulty cable. It will not increase internet speed or solve buffering caused by inadequate bandwidth. Its role is reducing electrical interference on an otherwise functioning wired network link.\u003c\/p\u003e\u003ch2\u003eHow (and Where) Does It Connect to Your System?\u003c\/h2\u003e\u003cp\u003eThe male RJ45 plug inserts directly into a network device. A standard Ethernet cable then plugs into the female RJ45 socket on the other end. The filter may be installed at several useful locations:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirectly at the Ethernet input of a network streamer or music server.\u003c\/li\u003e\n\u003cli\u003eAt an available LAN port on a router.\u003c\/li\u003e\n\u003cli\u003eAt the output of a network switch.\u003c\/li\u003e\n\u003cli\u003eAt an RJ45 wall socket before the final cable run.\u003c\/li\u003e\n\u003cli\u003eAt the wired Ethernet connection of a smart television or computer.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor audio use, placing it close to the streamer is often the most direct choice because it filters the connection immediately before it enters the component. If clearance behind the equipment is limited, install it at the switch, router, or wall socket instead. No settings, drivers, firmware, or power connection are required.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWill it slow down my network?\u003c\/h3\u003e\u003cp\u003eIt is specified for Gigabit Ethernet as well as 100 and 10 Mbps connections, so it should not intentionally restrict a compatible link. Actual network speed still depends on every cable and device in the chain.\u003c\/p\u003e\u003ch3\u003eWhich direction should it face?\u003c\/h3\u003e\u003cp\u003eInsert the built-in male RJ45 plug into the selected device or wall jack, then connect the Ethernet cable to the female socket. It can be used at either end of the cable run.\u003c\/p\u003e\u003ch3\u003eDoes it need power?\u003c\/h3\u003e\u003cp\u003eNo. The LAN iSilencer is entirely passive.\u003c\/p\u003e\u003ch3\u003eCan I use it with Power over Ethernet?\u003c\/h3\u003e\u003cp\u003eDo not assume PoE compatibility for a powered camera, access point, or other PoE device unless the complete application has been confirmed by the manufacturer. This product is intended primarily for network audio and standard Ethernet equipment.\u003c\/p\u003e\u003ch3\u003eWill it fix Wi-Fi interference or buffering?\u003c\/h3\u003e\u003cp\u003eNo. It works only in a wired copper Ethernet path and does not change wireless coverage, service-provider speed, or network configuration.\u003c\/p\u003e\u003ch3\u003eCan I use more than one?\u003c\/h3\u003e\u003cp\u003eMultiple units can be placed at different network endpoints, but begin with the connection closest to the sensitive audio component and evaluate the result before adding more.\u003c\/p\u003e","brand":"iFi Audio","offers":[{"title":"New","offer_id":47230608015533,"sku":"NEW-IFLANIS","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/IFLANIS_01-Large.jpg?v=1786985410"}],"url":"https:\/\/www.audioadvisor.com\/collections\/in-line-noise-filters.oembed","provider":"Audio Advisor","version":"1.0","type":"link"}