{"product_id":"jbl-concert-a704-4-channel-1000-watt-class-ab-amplifier","title":"JBL Concert A704 - 4-Channel 1000 Watt Class-AB Amplifier","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 14pt;\"\u003e\u003cspan class=\"\"\u003eConcert sound and elegant design\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan class=\"\"\u003e\u003cstrong\u003ePowerful Class AB Amplifier\u003c\/strong\u003e\u003cbr\u003eClass AB amplifier output stage combines the advantages of the Class A amplifier and the Class B amplifier while minimizing low efficiency and distortion.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdjustable High-Pass\/Low-Pass Crossover Filter\u003c\/strong\u003e\u003cbr\u003eConcert amps feature the High-Pass Filter (HPF) and the Low-Pass Filter (LPF), which allow you to adjust the frequency from 40 Hz to 400 Hz based on your own musical taste to deliver the correct music frequencies to speakers.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAuto power on feature\u003c\/strong\u003e\u003cbr\u003eWhen using the high level signal inputs, the amplifier will automatically turn on when a DC offset is detected (\u0026gt;2.5 volts). When using the line-level signal inputs, the amplifier will also turn on when a +12V signal is detected from the external enable wire.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eEfficient Cooling Design\u003c\/strong\u003e\u003cbr\u003eThe high-performance amplifiers are not only powerful but also compact and feature an efficient cooling design.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eConcert sound and elegant design\u003c\/strong\u003e\u003cbr\u003eJBL Concert amplifiers deliver an extraordinary sound experience and have an elegant industrial design.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eReliable performance\u003c\/strong\u003e\u003cbr\u003eTo deliver high-quality sound and reliable performance, the Concert amplifiers use high-quality components such as audio capacitors and power MOSFET. The amplifiers also have to undergo a rigorous testing process that unstable amplifiers would not survive. \u003cspan class=\"goog-text-highlight\"\u003eJBL freezes them, bakes them, shakes them, exposes them to ultraviolet light and tests them at full power for days.\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e\u003cspan class=\"goog-text-highlight\"\u003eProduct Features:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e4-Channel Class AB Car Amplifier\u003c\/li\u003e \u003cli\u003eRated Power RMS Output:\u003c\/li\u003e \u003cli\u003e70W x 4 @ 4 ohm\u003c\/li\u003e \u003cli\u003e90W x 4 @ 2 ohm\u003c\/li\u003e \u003cli\u003e180W x 2 @ 4 ohm bridged,\u003c\/li\u003e \u003cli\u003e\u0026lt;1%THD\u003c\/li\u003e \u003cli\u003eFull\/High-Pass\/Low-Pass Filter:\u003c\/li\u003e \u003cli\u003e40-400Hz, 12dB\/octave\u003c\/li\u003e \u003cli\u003eSN Ratio (1W @ 4 ohms): \u0026gt;75dB\u003c\/li\u003e \u003cli\u003eFrequency Response (-3dB):10Hz – 45kHz\u003c\/li\u003e \u003cli\u003eGross weight: 2.86kg\u003c\/li\u003e \u003cli\u003eUK Authorised Internet Dealer\u003c\/li\u003e \u003cli\u003eFull Manufacturer's Warranty\u003c\/li\u003e \u003cli\u003eNext-day Delivery Available\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat's in the box:\u003c\/strong\u003e\u003c\/p\u003e \u003cdiv\u003e \u003cul\u003e \u003cli\u003e4-Channel amplifier\u003c\/li\u003e \u003cli\u003eFour 30A fuses (2 installed\/2 spares)\u003c\/li\u003e \u003cli\u003e4 Speaker wire to RCA adapters\u003c\/li\u003e \u003cli\u003eFour 2-1\/8\" screws\u003c\/li\u003e \u003cli\u003eLogo badge w\/ adhesive backing\u003c\/li\u003e \u003cli\u003eOwner's manual (Eng\/Span\/Fren\/Others)\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"JBL","offers":[{"title":"Default Title","offer_id":52761083183370,"sku":"Concert A704 PROMO","price":134.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/4578\/4842\/files\/concert_a704-1.jpg?v=1774291183","url":"https:\/\/audiovisualworld.co.uk\/products\/jbl-concert-a704-4-channel-1000-watt-class-ab-amplifier","provider":"Audio Visual World","version":"1.0","type":"link"}