{"title":"Zapco STX-III Series","description":"\u003ch1 class=\"font_7 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_15 wixui-rich-text__text\"\u003eThe ST-X Series. Class A\/B and D Amplifiers.\u003c\/span\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003eThe Studio-X line of amplifiers from Zapco was designed specifically for today’s car audio market. The Studio-X compact chassis makes it an easy fit in any car and even in motorcycle fairings.\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\n\u003cspan class=\"wixui-rich-text__text\"\u003eThe square, \u003c\/span\u003e\u003cspan class=\"wixui-rich-text__text\"\u003elow profile chassis also means it will be easy to trim out for a great looking installation so your system will look as awesome as it sounds. \u003c\/span\u003e\u003cspan class=\"wixui-rich-text__text\"\u003eAnd speaking of sound...This is a Zapco amplifier and sound is what it’s all about. These are Class A\/B Zapco amplifiers.\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003ch3 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\n\u003cspan class=\"wixui-rich-text__text\"\u003eThe Studio-X \u003c\/span\u003e\u003cspan class=\"wixui-rich-text__text\"\u003ehave the same high quality caps, op-amps, and bi-polar outputs that made the C2K and Reference series amps the industry standard for sound quality. \u003c\/span\u003e\n\u003c\/h3\u003e\n\u003ch3 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003eReliability? Zapco defines reliability. It’s not at all unusual to see Zapco amps moved from car to car and from generation to generation. Zapco Amps produced in the ‘90 are still being traded and bought on the internet by sound quality fans world wide. The Studio-x will be no different.\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003eThese amps are built to last. See the Studio-X amps at a dealer today.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003eStudio-X Class A\/B Full Range Amplifiers\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 style=\"text-align: center;\"\u003eThere are six full range amplifiers in the Studio-X series and all are Class A\/B and all use bi-polar output devices for the smoothest possible sound. And, all are packed with all those features you want. Common features of the ST-X amplifiers include variable HP\/LP\/ Full Range electronic crossovers, variable bass boost, variable gain by channel pair, speaker level input, heavy duty positive lock terminal blocks and preamp outputs to daisy chain out to the next amp in your system without having to add more RCA cables. And the most important feature shared by all the ST-X amps is the legendary Zapco sound quality, developed with over 40 years of experience.\u003c\/h3\u003e\n\u003ch3 style=\"text-align: center;\"\u003eFor 2015 we have done something truly unique with the ST-4X II, we have taken this top seller and tweaked it to create the ST-4X SQ for the customer who appreciates the finer points of the music and wants to invest a little extra for a more “live” sound. We did this by upgrading the caps and op-amps and making few other changes. The SQ version will have a more open sound and a more precise sound stage. We also used Tiffany style panel mount RCA connectors on the SQ for a solid signal transfer.\u003c\/h3\u003e\n\u003ch3 style=\"text-align: center;\"\u003eThis year we bring you the Studio-SQ III series with a new high efficiency finned chassis and temperature controlled fans to assure that your amplifier plays all day long with no problems of overheating, even when you get that urge to really boogie.  And with the new chassis, we even made a few tweaks to the internal components to take the sound quality up another notch.\u003c\/h3\u003e\n\u003ch3 style=\"text-align: center;\"\u003eWith the new Studio-X SQ III you get the sound quality that other companies offer only in their big competition amps (and better than many of them) in a new fan cooled aluminum heat sink for improved efficiency and reliability, with 70W RMS\/Channel @ 4Ω and 95W RMS\/channel @ 2Ω (100W\/Ch. @ 4Ω and 150W\/Ch. @ 2Ω for the ST-6X SQ III). You also get plenty of features, like 12dB\/octave multi-function crossovers, bass boost, variable gain and even pass-through RCA outputs so you can daisy chain amps. As for performance, the Studio-X SQ III gives you more than power. These amps have less then 0.1% THD+noise and over 95dB signal to noise for multi-channel amps; less then 0.1% THD+noise and over 100dB signal to noise for mono amps.\u003c\/h3\u003e","products":[{"product_id":"hd-bt-ii-d","title":"HD BT II - D | Zapco HD-APTX Bluetooth DSP module","description":"\u003cdiv id=\"comp-lbb0qahe\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-lbb0qahe wixui-rich-text\" data-testid=\"richTextElement\"\u003e\n\u003ch1 class=\"font_2 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eHD-BT II-D   Bluetooth Module for HDSP-V, ADSP-IV, ST-X DSP III\u003c\/span\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThe new HD-BT II-D Bluetooth Module is more than an accessory. It allows you to interact with the amplifier via your mobile phone for music streaming (with aptX HD quality) and use the APPs (with ST-X DSP III Series) to do everything necessary for a complete setup and tune of the DSP.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e120 MHz Qualcomm Audio DSP\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e32 MHz Dual Core Processor\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eHigh-Performance 24-bit Stereo Audio Interface\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eaptX, aptX HD Adaptive\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eSBC and AAC Audio Codec Support\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eDigital Outputs\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eCompatibility: HDSP-V, ADSP-IV, ST-X DSP III\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"comp-lbb0qahs\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-lbb0qahs wixui-rich-text\" data-testid=\"richTextElement\"\u003e\u003c\/div\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381019603233,"sku":"ZBTD","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/0bf3d1_320afb8fdc584bb88cf65152c3b0be79_mv2.avif?v=1771874128"},{"product_id":"st-6x-dsp-iii","title":"ST-6X DSP III | Zapco STX-III Series 6-Ch 900 watt Class AB Amplifier with DSP","description":"\u003cdiv id=\"comp-ltzhni7r\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-ltzhni7r wixui-rich-text\" data-testid=\"richTextElement\"\u003e\n\u003ch1 class=\"font_2 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\n\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eST-6X DSP III \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003e6-Ch. Class AB Amplifier with DSP\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eFeatures and Functions\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003e6-Channel, Full Range, Class A\/B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eOn-B\u003c\/span\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eoard, Full Function, 8-ch. Digital Signal Processing\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eHigh-pass and low-pass filters, phase control, signal delay, and 15 channels of parametric equalization on each channel\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eOptical Digital Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eBT Streaming: Bluetooth Port for external APTX HD Module (optional)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eAnalog input gain controls\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003ePower @ 4Ω: 6 x\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003e100 watts\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eTHD @ Rated Power\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003e\u0026lt; 0.5% THD\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003ePower @ 2Ω: 6 x 130 watts\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003ePower Bridged @ 4Ω: 3 x 250 watts\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eSignal to Noise Ratio \u0026gt; 90dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eTHD + Noise \u0026lt; 0.2%\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eChannel Separation  \u0026gt;60dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eFrequency Response 15Hz to 30KHz ±1dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font_8 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003eDimensions in mm: 160(W) x 57(H) x 450(L) Overall: 160(W) x 57(H) x 475(L)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381023142177,"sku":"ZS6XD3","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST6XDSPIII_1.jpg?v=1771876654"},{"product_id":"st-2xp-sq-iii","title":"ST-2XP SQ III | Zapco STX-III Series 2-Ch 500 watt Class AB Sound Quality Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-2XP SQ III 2-Ch. Class AB\u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\"\u003eSound Quality Amplifier\u003c\/h1\u003e\n\u003cdiv id=\"comp-ltyo42ak\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-ltyo42ak wixui-rich-text\" data-testid=\"richTextElement\"\u003e\u003c\/div\u003e\n\u003cdiv id=\"comp-ltyo42an\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-ltyo42an wixui-rich-text\" data-testid=\"richTextElement\"\u003e\n\u003ch2 class=\"font_2 wixui-rich-text__text\"\u003e\n\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_1 wixui-rich-text__text\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cdiv id=\"comp-ltyo42bp3\" class=\"comp-ltyo42bp3 wixui-repeater\"\u003e\n\u003cdiv role=\"list\" class=\"hRdzm4\"\u003e\n\u003cdiv class=\"cGWabE\"\u003e\n\u003cdiv role=\"listitem\" class=\"T7n0L6\"\u003e\n\u003cdiv id=\"comp-ltyo42br4__480524f7-5d4e-4d36-adba-04ef7efe9664\" class=\"comp-ltyo42br4__480524f7-5d4e-4d36-adba-04ef7efe9664 YzqVVZ wixui-repeater__item\"\u003e\n\u003cdiv data-mesh-id=\"comp-ltyo42br4__480524f7-5d4e-4d36-adba-04ef7efe9664inlineContent\" data-testid=\"inline-content\" class=\"\"\u003e\n\u003cdiv data-mesh-id=\"comp-ltyo42br4__480524f7-5d4e-4d36-adba-04ef7efe9664inlineContent-gridContainer\" data-testid=\"mesh-container-content\"\u003e\n\u003cdiv id=\"comp-ltyo42bz2__480524f7-5d4e-4d36-adba-04ef7efe9664\" class=\"ku3DBC zQ9jDz qvSjx3 Vq6kJx comp-ltyo42bz2__480524f7-5d4e-4d36-adba-04ef7efe9664 wixui-rich-text\" data-testid=\"richTextElement\"\u003e\n\u003ch2 class=\"font_2 wixui-rich-text__text\" style=\"text-align: center;\"\u003e\u003cspan class=\"wixui-rich-text__text\"\u003e\u003cspan class=\"color_36 wixui-rich-text__text\"\u003eFeatures and Functions\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"comp-ltyo42c25__480524f7-5d4e-4d36-adba-04ef7efe9664\" data-testid=\"richTextElement\" style=\"text-align: center;\"\u003e\n\u003cp\u003e- 2-Channel, Full Range, Class A\/B\u003cbr\u003e- Tiffany style Panel Mount RCA\u003cbr\u003e- Speaker Level Inputs\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Auto-on with Speaker level inputs\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- New aluminum chassis\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"comp-ltyo42c42\" style=\"text-align: center;\"\u003e\n\u003cdiv role=\"list\"\u003e\n\u003cdiv\u003e\n\u003cdiv role=\"listitem\"\u003e\n\u003cdiv id=\"comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664\"\u003e\n\u003cdiv id=\"bgLayers_comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664\" data-hook=\"bgLayers\" data-motion-part=\"BG_LAYER comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664\"\u003e\n\u003cdiv data-testid=\"colorUnderlay\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv id=\"bgMedia_comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664\" data-motion-part=\"BG_MEDIA comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-mesh-id=\"comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664inlineContent\" data-testid=\"inline-content\"\u003e\n\u003cdiv data-mesh-id=\"comp-ltyo42c55__480524f7-5d4e-4d36-adba-04ef7efe9664inlineContent-gridContainer\" data-testid=\"mesh-container-content\"\u003e\n\u003cdiv id=\"comp-ltyo42c69__480524f7-5d4e-4d36-adba-04ef7efe9664\" data-testid=\"richTextElement\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"comp-ltyo42c713__480524f7-5d4e-4d36-adba-04ef7efe9664\" data-testid=\"richTextElement\"\u003e\n\u003cp\u003e- Power @ 4Ω: 2 x 150 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.5%\u003cbr\u003e- Power @ 2Ω: 2 x 250 watts\u003cbr\u003e- Power Bridged @ 4Ω: 500W RMS\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 95dB\u003cbr\u003e- THD + Noise \u0026lt; 0.05%\u003cbr\u003e- Channel Separation \u0026gt; 60dB\u003cbr\u003e- Frequency Response 15Hz to 30KHz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Net Dimensions (mm): 160(W) x 58(H) x 300(L)\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 325(L)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381023174945,"sku":"ZS2P3","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/0bf3d1_509fa72fdca046e2b28efa0f1a441cbf_mv2.avif?v=1771877039"},{"product_id":"st-4x-sq-iii","title":"ST-4X SQ III | Zapco STX-III Series 4-Ch 1000 watt Class ABSound Quality Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-4X SQ III 4-Ch. Class AB\u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\"\u003eSound Quality Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- 4-Channel, Full Range, Class A\/B\u003cbr\u003e- Tiffany style Panel Mount RCA\u003cbr\u003e- Speaker Level Inputs\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Auto-on with Speaker level inputs\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- New aluminum chassis\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 4Ω: 4 x 70 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.1% THD\u003cbr\u003e- Power @ 2Ω: 4 x 95 watts\u003cbr\u003e- Power Bridged @ 4Ω: 2 x 190W RMS\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 95dB\u003cbr\u003e- Channel Separation \u0026gt;60dB\u003cbr\u003e- Frequency Response 15Hz to 30KHz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Net Dimensions (mm): 160(W) x 58(H) x 300(L)\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 325(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381023207713,"sku":"ZS43","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST4XSQIII_1.jpg?v=1771877343"},{"product_id":"st-4xp-sq-iii","title":"ST-4XP SQ III | Zapco STX-III Series 4-Ch 1000 watt Class AB Sound Quality Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-4XP SQ III 4-Ch. Class AB\u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\"\u003eSound Quality Amplifier\u003c\/h1\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003c\/h2\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- 4-Channel, Full Range, Class A\/B\u003cbr\u003e- Tiffany style Panel Mount RCA\u003cbr\u003e- Speaker Level Inputs\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Auto-on with Speaker level inputs\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- New aluminum chassis\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 4Ω: 4 x 150 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.1% THD\u003cbr\u003e- Power @ 2Ω: 4 x 250 watts\u003cbr\u003e- Power Bridged @ 4Ω: 2 x 500W RMS\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 95dB\u003cbr\u003e- Channel Separation \u0026gt;60dB\u003cbr\u003e- Frequency Response 15Hz to 30KHz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 475(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381023240481,"sku":"ZS4P3","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST4XPSQIII_1.jpg?v=1771877571"},{"product_id":"st-6x-sq-iii","title":"ST-6X SQ III | Zapco STX-III Series 6-Ch 900 watt Class AB Sound Quality Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-6X SQ III 6-Ch. Class AB\u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\"\u003eSound Quality Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- 6-Channel, Full Range, Class A\/B\u003cbr\u003e- SQ Upgrades: Op-amps, Caps, Etc.\u003cbr\u003e- Tiffany style Panel Mount RCA’s\u003cbr\u003e- RCA and Speaker Level Inputs\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Auto-on with Speaker level inputs\u003cbr\u003e- 2\/4\/6 Ch. input mode selector\u003cbr\u003e- New aluminum chassis\u003cbr\u003e- Variable bass boost control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 4Ω: 6 x 100 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.5% THD\u003cbr\u003e- Power @ 2Ω: 6 x 150 watts\u003cbr\u003e- Power Bridged @ 4Ω: 3 x 300W RMS\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 95dB\u003cbr\u003e- THD + Noise \u0026lt; 0.05%\u003cbr\u003e- Channel Separation \u0026gt;60dB\u003cbr\u003e- Frequency Response 15Hz to 30KHz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 475(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381024911649,"sku":"ZS63","price":639.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST6XSQIII_1.jpg?v=1771878014"},{"product_id":"st-204d-sq-iii","title":"ST-204D SQ III | Zapco STX-III Series 4-Ch 800 watt Class D Sound Quality Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-204D SQ III 4-Ch. Class D \u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\"\u003eSound Quality Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- 4-Channel, Full Range, Class D\u003cbr\u003e- RCA and Speaker Level inputs\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Variable bass boost control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 4Ω: 4 x 200 watts RMS\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.5%THD\u003cbr\u003e- Power @ 2Ω: 4 x 290 watts RMS\u003cbr\u003e- Power Bridged @ 4Ω: 2 x 580 W RMS\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 90dB\u003cbr\u003e- THD + Noise \u0026lt; 0.1%\u003cbr\u003e- Frequency Response 15Hz to 30KHz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm) 160(W) x 58(H) x 325(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381025009953,"sku":"ZS243","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST204DSQIII_0.jpg?v=1771878182"},{"product_id":"st-500xm-iii","title":"ST-500XM III | Zapco STX-III Series 1Ch 500 watt Mono Class D Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-500XM III Mono Class D Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Single channel, Class D, Bass Amplifier\u003cbr\u003e- New aluminum chassis\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Variable subsonic filter\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- Variable center frequency for bass boost\u003cbr\u003e- Variable phase control\u003cbr\u003e- Strappable to use a pair of amps on a single voice coil\u003cbr\u003e- Dash mount remote gain control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 1Ω: 1 x 400 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.2%THD\u003cbr\u003e- Power @ 2Ω: 1 x 300 watts\u003cbr\u003e- Power @ 4Ω: 1 x 200 watts\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 85dB\u003cbr\u003e- THD + Noise \u0026lt; 0.2%\u003cbr\u003e- Efficiency \u0026gt; 85%\u003cbr\u003e- Frequency Response 10Hz to 200Hz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 225(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381025042721,"sku":"ZS51M3","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST500XMIII_1_1.jpg?v=1771878799"},{"product_id":"st-1000xm-iii","title":"ST-1000XM III | Zapco STX-III Series 1Ch 1000 watt Mono Class D Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-1000XM III Mono Class D Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Single channel, Class D, Bass Amplifier\u003cbr\u003e- New aluminum chassis\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Variable subsonic filter\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- Variable center frequency for bass boost\u003cbr\u003e- Variable phase control\u003cbr\u003e- Strappable to use a pair of amps on a single voice coil\u003cbr\u003e- Dash mount remote gain control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 1Ω: 1 x 1000 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.2%THD\u003cbr\u003e- Power @ 2Ω: 1 x 700 watts\u003cbr\u003e- Power @ 4Ω: 1 x 500 watts\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 100dB\u003cbr\u003e- THD + Noise \u0026lt; 0.1%\u003cbr\u003e- Efficiency \u0026gt; 85%\u003cbr\u003e- Frequency Response 10Hz to 200Hz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 325(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381025075489,"sku":"ZS10M3","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST1000XMIII_1.jpg?v=1771879141"},{"product_id":"st-1500xm-iii","title":"ST-1500XM III | Zapco STX-III Series 1Ch 1500 watt Mono Class D Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-1500XM III\u003cbr\u003eMono Class D Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Single channel, Class D, Bass Amplifier\u003cbr\u003e- New aluminum chassis\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Variable subsonic filter\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- Variable center frequency for bass boost\u003cbr\u003e- Variable phase control\u003cbr\u003e- Strappable to use a pair of amps on a single voice coil\u003cbr\u003e- Dash mount remote gain control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 1Ω: 1 x 1600 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.2%THD\u003cbr\u003e- Power @ 2Ω: 1 x 1150watts\u003cbr\u003e- Power @ 4Ω: 1 x 800 watts\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 85dB\u003cbr\u003e- THD + Noise \u0026lt; 0.2%\u003cbr\u003e- Efficiency \u0026gt; 85%\u003cbr\u003e- Frequency Response 10Hz to 200Hz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 400(L)\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381025108257,"sku":"ZS15M3","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST1500XMIII_1_f54ea310-2f6b-4fec-a5e5-719b8b10a858.jpg?v=1771879169"},{"product_id":"st-2000xm-iii","title":"ST-2000XM III | Zapco STX-III Series 1Ch 2000 watt Mono Class D Amplifier","description":"\u003ch1 style=\"text-align: center;\"\u003eST-2000XM III\u003cbr\u003eMono Class D Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeatures and Functions\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Single channel, Class D, Bass Amplifier\u003cbr\u003e- New aluminum chassis\u003cbr\u003e- Variable input gain control\u003cbr\u003e- Variable electronic crossover\u003cbr\u003e- Variable subsonic filter\u003cbr\u003e- Variable bass boost control\u003cbr\u003e- Variable center frequency for bass boost\u003cbr\u003e- Variable phase control\u003cbr\u003e- Strappable to use a pair of amps on a single voice coil\u003cbr\u003e- Dash mount remote gain control\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e- Power @ 1Ω: 1 x 2000 watts\u003cbr\u003e- THD @ Rated Power \u0026lt; 0.2%\u003cbr\u003e- Power @ 2Ω: 1 x 1450 watts\u003cbr\u003e- Power @ 4Ω: 1 x 1000 watts\u003cbr\u003e- Signal to Noise Ratio \u0026gt; 85dB\u003cbr\u003e- THD + Noise \u0026lt; 0.2%\u003cbr\u003e- Efficiency \u0026gt; 85%\u003cbr\u003e- Frequency Response 10Hz to 200Hz ±1dB\u003cbr\u003e- Input Sensitivity .25v to 5v\u003cbr\u003e- Overall Dimensions (mm): 160(W) x 58(H) x 475(L\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52381025141025,"sku":"ZS20M3","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/files\/ST2000XMIII_1.jpg?v=1771879489"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/1145\/9873\/collections\/ST500XMIII_1.jpg?v=1771876820","url":"https:\/\/www.shopalumapro.com\/collections\/zapco-stx-iii.oembed","provider":"ShopAlumapro.com","version":"1.0","type":"link"}