{"product_id":"adastra-a8-quad-zone-class-d-stereo-amplifier-8x200w","title":"Adastra A8 Quad-Zone Class D Stereo Amplifier 8x200W","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Adastra A8 is a multi-zone stereo amplifier built for installations that need good stereo sound across several rooms or listening areas. It delivers four independent stereo outputs, each rated up to 200W per channel at 4 Ohms, so you can run different audio in different zones from a single unit. Speakers connect through the rear panel Euroblock terminals, and a rotary switch on each zone selects the audio from two rear stereo inputs, a front 3.5mm stereo input or the built-in media player.\u003c\/p\u003e\n\u003cp\u003eSource options are wide. The inbuilt media player handles mp3 playback from a USB drive or SD card, and there's a B\/T wireless receiver and an FM radio tuner with an external aerial (antenna) connection via an F type socket. Two microphone inputs on 6.3mm jacks stay live to all output zones at all times, which suits paging or announcements alongside background music. A talkover control lets a mic take priority over the playing audio when needed.\u003c\/p\u003e\n\u003cp\u003eThe amplifier uses Class D construction with a frequency response of 20Hz to 20kHz (±0.5dB), a dynamic range of 92dB and THD+N below 0.1%. Protection covers thermal, over-current, over-voltage and short-circuit conditions. It runs from a 230Vac 50Hz IEC supply with an F5A fuse and measures 482 x 300 x 88mm, so it fits a standard 19-inch rack. The A8 is also available with three independent stereo outputs if you need fewer zones.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e230Vac, 50Hz (IEC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse\u003c\/td\u003e\n\u003ctd\u003eF5A, 250V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier : construction\u003c\/td\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz - 20kHz ±0.5dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrophone inputs\u003c\/td\u003e\n\u003ctd\u003e2 x 6.3mm jack (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine inputs\u003c\/td\u003e\n\u003ctd\u003eLine 1: L+R (6.3mm jack\/RCA), Line 2: L+R (RCA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity : line\u003c\/td\u003e\n\u003ctd\u003e0.775Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary input\u003c\/td\u003e\n\u003ctd\u003e3.5mm stereo jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity : aux\u003c\/td\u003e\n\u003ctd\u003e0.480Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e20k Ohms (balanced), 10k Ohms (unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio source\u003c\/td\u003e\n\u003ctd\u003eUSB\/SD mp3 playback, FM tuner, B\/T receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB\/T wireless version\u003c\/td\u003e\n\u003ctd\u003e2.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput controls\u003c\/td\u003e\n\u003ctd\u003eAux, Media, Line1, Line2, Mic1, Mic2, Talkover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna connection\u003c\/td\u003e\n\u003ctd\u003eF type (FM tuner)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic range\u003c\/td\u003e\n\u003ctd\u003e92dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD +N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eThermal, over-current, over-voltage, short-circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482mm x 300mm x 88mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/953408UK_24899659-e391-4821-9c6c-81d40975e6b5.pdf?v=1785060000\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eHow many zones does the A8 support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe A8 provides four independent stereo outputs, so you can run four separate zones. A three-zone version is also available if you need fewer outputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power does it deliver?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach output delivers up to 200W per channel at 4 Ohms, giving 8 x 200W in total across the four stereo zones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat audio sources can I use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou can select from two rear stereo inputs, a front 3.5mm stereo input, or the built-in media player. The media player handles USB and SD mp3 playback, a B\/T wireless receiver and an FM tuner.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do microphone inputs work across zones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThere are two microphone inputs on 6.3mm jacks. Both stay live to all output zones at all times, and a talkover control lets a mic take priority over the playing audio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I connect speakers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpeakers connect through the rear panel Euroblock terminals. The FM tuner uses an F type aerial (antenna) connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit a standard rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It measures 482 x 300 x 88mm, so it fits a standard 19-inch rack, and runs from a 230Vac 50Hz IEC mains supply.\u003c\/p\u003e\n","brand":"AVSL","offers":[{"title":"Default Title","offer_id":53272140120331,"sku":"953.408UK","price":399.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/953408UK_0.jpg?v=1785060022","url":"https:\/\/niori.co.uk\/products\/adastra-a8-quad-zone-class-d-stereo-amplifier-8x200w","provider":"Niori","version":"1.0","type":"link"}