{"product_id":"esx-qs-four-iso","title":"ESX QS-FOUR-ISO","description":"\u003cdiv\u003e\n\n\u003cp\u003e\u003cspan\u003eFollowing the great success of the sensationally small 2-channel power amplifier \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eQS-TWO\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e (just 90 x 35 x 70 mm), ESX set itself the goal of developing an equally small but powerful 4-channel version. With the brand-new \u003c\/span\u003e\u003cspan\u003eQS-FOUR\u003c\/span\u003e\u003cspan\u003e, this ambition is now a reality: The ultra-compact 4-channel power amplifier is now available – and is only 10 mm wider than the 2-channel model. With an impressive 4 x 60 watts RMS in just 90 x 35 x 80 mm, it sets new standards in the field of nano amplifiers.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eMany people wonder: Why so small? The answer is simple: Mini power amplifiers can be installed directly in the dashboard as plug-and-play ISO variants. Simply connect the cables – and the front and rear speakers are powered, including the power connection. The special thing: In vehicles with an ISO connection, everything is already prepared, so no additional power cable needs to be laid. The \u003c\/span\u003e\u003cspan\u003eQS-FOUR\u003c\/span\u003e\u003cspan\u003e is perfectly suited for this. Thanks to its impressive efficiency of up to 90%, it also only requires 5 to 10 amperes of continuous current when listening to music – a performance that the factory power cables can easily handle.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eShould the desire for more bass arise, that is no problem either: The \u003c\/span\u003e\u003cspan\u003eQS-FOUR\u003c\/span\u003e\u003cspan\u003e has special low-level outputs with which active subwoofers such as \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eQ168A\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eQ201A\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eHZ800A\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e can be driven. These outputs can also power larger monoblocks such as \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eQL500.1\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eQL750.1\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e, which come into question if you want to install separate subwoofers.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eOnce connected, the  \u003c\/span\u003e\u003cspan\u003eQS-FOUR\u003c\/span\u003e\u003cspan\u003e will amaze you. Because in most cases, the factory speakers are significantly better than you think. Often it is due to the installed radios, which simply deliver too little power. If you want to listen to louder music, the speakers \"scratch\". If you then think that it is the speakers' fault, you are mistaken. Because the so-called \"scratching\" usually comes from the amplifier built into the radio, which is at its limit.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eIn this full-load operation, the amplifier distorts. This is known as so-called \"clipping\". An additional amplifier always solves this. However, these are usually very large and must additionally be connected to the battery with thumb-thick power cables. ESX developed the \u003c\/span\u003e\u003cspan\u003eQS-FOUR\u003c\/span\u003e\u003cspan\u003e precisely for this purpose, which delivers 4 to 6 times as much power as conventional radio amplifiers with up to 4 x 60 watts RMS. And that with very low power consumption, the lowest distortion factor, and in state-of-the-art Class D technology.\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\n\n\u003cdiv\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\t\u003cli\u003e\u003cspan\u003eEfficient Class D amplifier with ultra-compact dimensions\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eHeavy cast cooling fin with optimal cooling properties\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eAutomatic switch-on function\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\n\n\u003cspan\u003eHigh-level inputs with Error Protection System (\u003c\/span\u003e\u003cspan\u003eEPS\u003c\/span\u003e\u003cspan\u003e®\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\n\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eStart\/Stop Ready\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cul\u003e\t\u003cli\u003e\u003cspan\u003eRCA inputs (via cable connector)\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eStereo RCA output for e.g. active subwoofers\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eSwitchable HPF\/LPF for front and rear\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003ePerfect for HD Audio\u003c\/span\u003e\u003c\/li\u003e\t\u003cli\u003e\u003cspan\u003eISO Plug+Play cable set (60 cm)\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cdiv\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTechnical Data\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e4-channel Class D Nano Digital Amplifier\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e4 x 35\/45\/60 watts RMS @ 4\/3\/2 Ω\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e2 x 120 watts RMS @ 4 Ω bridged\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e2 x HPF\/LPF @ 80 Hz\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eTHD+N distortion factor @ 5W\/RMS \u0026lt; 0.007%\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eFrequency range 10 Hz to 60 kHz\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eDimensions 90 x 35 x 80 mm\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003eEfficiency up to 90%\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e\u003c\/div\u003e","brand":"ESX","offers":[{"title":"Default Title","offer_id":58741416264011,"sku":null,"price":225.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1084\/3242\/5291\/files\/3bcfd1fc-cb8262_a23d9ad03ba34ac19c712a2c5f8a2442_mv2.webp?v=1791402969","url":"https:\/\/www.styleandaudio.de\/en\/products\/esx-qs-four-iso","provider":"Style and Audio","version":"1.0","type":"link"}