{"product_id":"adastra-a4-dual-zone-stereo-pa-amplifier-4-x-200w","title":"Adastra A4 Dual Zone Stereo PA Amplifier 4 x 200W","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Adastra A4 is a dual stereo PA amplifier built for installers who need to run two separate zones from a single unit. Each zone has its own stereo output, so you can play different audio in two areas at the same time. A rotary switch on each zone selects the source: one of two rear stereo inputs, a front 3.5mm stereo input, or the built-in media player. That gives you plenty of flexibility across bars, restaurants and function rooms without adding extra kit.\u003c\/p\u003e\n\u003cp\u003eThe mixer section handles two microphones and a stereo audio source. Mic inputs 1 and 2 stay live to both zones at all times, which makes it easy to route announcements or a compere across the whole venue while background music keeps running. The inbuilt media player reads mp3 tracks from a USB drive or SD card, and there's also a Bluetooth receiver for wireless playback from a phone or tablet. An F-type connection is fitted for the FM tuner aerial (US: antenna).\u003c\/p\u003e\n\u003cp\u003ePower comes from a Class D amplifier stage rated at 4 x 200W, with each channel able to drive up to two 8 Ohm speakers. Speaker connections use 4mm binding posts across all four channels on the rear panel, alongside four RCA line outputs. Per-zone bass and treble controls let you tune each area, and protection covers thermal, over-current, over-voltage and short-circuit. The frequency response runs 20Hz to 20kHz ±0.5dB with THD+N below 0.1%. The unit fits a standard 19-inch rack at 482 x 260 x 88mm and runs from 230Vac mains.\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\u003eAmplifier : construction\u003c\/td\u003e\n\u003ctd\u003eClass D\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\u003eAuxiliary input\u003c\/td\u003e\n\u003ctd\u003e3.5mm stereo jack\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\u003eAudio source\u003c\/td\u003e\n\u003ctd\u003eUSB\/SD mp3 playback,  BT receiver\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\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\u003eLine output\u003c\/td\u003e\n\u003ctd\u003e4 x RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker outputs\u003c\/td\u003e\n\u003ctd\u003e4mm binding posts (4 channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput controls\u003c\/td\u003e\n\u003ctd\u003e2 x source select, 2 xBass, 2 xTreble, Ch1, Ch2, Ch3, Ch4\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 260mm x 88mm\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\u003eInput sensitivity : line\u003c\/td\u003e\n\u003ctd\u003e0.775Vrms\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\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\u003eBluetooth version\u003c\/td\u003e\n\u003ctd\u003e2.3\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\/953404UK_aad590eb-30cc-4aac-ac38-ceacebf353f1.pdf?v=1785059905\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eCan the A4 play different audio in two rooms at once?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It has two independent stereo zone outputs, and each zone selects its own source from the rear inputs, front 3.5mm input or the built-in media player.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many microphones can I connect?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo microphones via 6.3mm mono jacks. Both mic inputs are live to both output zones at all times, so announcements reach the whole venue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat playback sources are built in?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA media player for mp3 files from USB drive or SD card, plus a Bluetooth receiver for wireless playback from a phone or tablet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat speakers can it drive?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach of the four channels drives up to two 8 Ohm speakers via 4mm binding posts, rated at 200W per channel.\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 260 x 88mm, which suits a standard 19-inch equipment rack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it have an FM tuner?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, with an F-type aerial (US: antenna) connection on the rear panel.\u003c\/p\u003e\n","brand":"AVSL","offers":[{"title":"Default Title","offer_id":53272139694347,"sku":"953.404UK","price":269.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/953404UK_0.jpg?v=1785059925","url":"https:\/\/niori.co.uk\/products\/adastra-a4-dual-zone-stereo-pa-amplifier-4-x-200w","provider":"Niori","version":"1.0","type":"link"}