{"product_id":"audioquest-jitterbug-fmj","title":"AudioQuest JitterBug FMJ","description":"\u003ch2\u003eJitterBug FMJ: USB noise filter with a shielding metal case\u003c\/h2\u003e\n\u003cp\u003eThe JitterBug FMJ is a small passive filter that fits a USB port and lowers the radio-frequency noise that computers, cars and other devices inject into the connection. Compared with the first JitterBug it adds a defence against interference coming from the surroundings, to which the USB interface is especially exposed. RF noise cannot be heard as such, yet it strips detail and contrast from music.\u003c\/p\u003e\n\u003ch3\u003eFilter circuits and shielding\u003c\/h3\u003e\n\u003cp\u003eInside, two separate \u003cstrong\u003eNoise-Dissipation\u003c\/strong\u003e circuits are at work; they attenuate the noise produced by both the transmitting and the receiving device and limit jitter and packet errors. FMJ stands for \u003cstrong\u003eFull Metal Jacket\u003c\/strong\u003e: the shell is metal throughout, and the hinged door over the socket, which looks like plain rubber, is loaded with carbon and absorbs radio frequency. The device meets every USB 2.0 specification.\u003c\/p\u003e\n\u003ch3\u003eHow to use it\u003c\/h3\u003e\n\u003cp\u003eIn series it goes between the source (computer, smartphone, NAS, streamer, car system) and the USB input of the DAC. With DragonFly Black and DragonFly Red the result is always positive; with DragonFly Cobalt, which already contains part of the same filtering, a trial is advisable, because the effect depends on the system. In parallel, a second JitterBug takes another free USB port, with its door closed, and removes further noise from the USB power line: this is why it is effective even on ports reserved for service or updates.\u003c\/p\u003e\n\u003ch3\u003eMain features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual Noise-Dissipation circuit for RF noise generated by the connected devices\u003c\/li\u003e\n\u003cli\u003eFull Metal Jacket case against outside interference\u003c\/li\u003e\n\u003cli\u003eHinged door in carbon-loaded material, proof against radio frequency\u003c\/li\u003e\n\u003cli\u003eUsable in series ahead of nearly every USB DAC, or in parallel on a free port\u003c\/li\u003e\n\u003cli\u003eComplies with USB 2.0 specifications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AudioQuest","offers":[{"title":"Default Title","offer_id":58675133055320,"sku":"AQ-JITTERBUG-FMJ","price":72.45,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/5278\/7645\/files\/audioquest-jitterbug-fmj-front-inpld.jpg?v=1791293546","url":"https:\/\/videosell.de\/products\/audioquest-jitterbug-fmj","provider":"Videosell store","version":"1.0","type":"link"}