{"product_id":"sound-storm-laboratories-s4eq-4-band-car-audio-equalizer","title":"Sound Storm Laboratories S4EQ 4-Band Car Audio Equalizer","description":"\u003cp\u003e\u003cstrong\u003eThe Sound Storm Laboratories S4EQ is a four-band car audio pre-amplifier that gives precise tone shaping, subwoofer control, and high-quality gold-plated outputs for cleaner signal transfer.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for installers and enthusiasts who want fine control over their in-car sound, the S4EQ combines four adjustable frequency bands with flexible routing and high-level pre-amp outputs. Its compact footprint and dual-color illumination make it easy to mount and read in dim cabins, while the 7 V pre-amp outputs and gold-plated connectors help minimize noise and preserve audio fidelity.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the S4EQ let me tailor bass and subwoofer performance?\u003c\/h3\u003e\n\u003cp\u003eThe S4EQ includes a dedicated variable subwoofer filter and a subwoofer level control so you can dial in low-end balance without affecting mid and high frequencies. A switchable phase selector helps align the sub with your main speakers for tighter bass response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVariable subwoofer filter for adjustable low-pass crossover\u003c\/li\u003e\n  \u003cli\u003eIndependent subwoofer level control for gain matching\u003c\/li\u003e\n  \u003cli\u003ePhase selector to reduce cancellations and improve punch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat equalization options does the unit provide for tone shaping?\u003c\/h3\u003e\n\u003cp\u003eThis pre-amp offers four EQ bands centered at 40 Hz, 150 Hz, 1 kHz, and 20 kHz with +\/-18 dB of boost or cut at each center frequency. Those bands cover sub-bass, lower-mid, presence, and extreme treble so you can address common room and vehicle acoustic issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e40 Hz band for managing deep bass\u003c\/li\u003e\n  \u003cli\u003e150 Hz band to tame muddiness in low-mids\u003c\/li\u003e\n  \u003cli\u003e1 kHz for vocal and instrument clarity\u003c\/li\u003e\n  \u003cli\u003e20 kHz for crisp high-frequency detail\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan the S4EQ integrate with multiple sources and installations?\u003c\/h3\u003e\n\u003cp\u003eThe unit features two source inputs, an input selector, fader control, and master volume so it adapts to multi-source systems and different installation layouts. Gold-plated front, rear, and subwoofer outputs with a 7 V pre-amp level provide strong, low-noise signals to amplifiers or processors.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo source inputs for swapping head units or devices\u003c\/li\u003e\n  \u003cli\u003eInput selector and fader control for system routing convenience\u003c\/li\u003e\n  \u003cli\u003eGold-plated outputs and 7 V pre-amp output for clean signal delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the size and usability fit typical car installations?\u003c\/h3\u003e\n\u003cp\u003eMeasuring approximately 4-1\/4\" L x 6-13\/16\" W x 1-1\/8\" H, the S4EQ occupies a small footprint that fits behind dash panels or in consoles. Dual color illumination improves visibility for night driving, and physical knobs and switches make real-time adjustments simple without menu diving.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompact chassis for flexible mounting locations\u003c\/li\u003e\n  \u003cli\u003eDual color illumination for easy nighttime reading\u003c\/li\u003e\n  \u003cli\u003eHands-on knobs and switches for quick tuning on the fly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Installers, car audio hobbyists, and anyone upgrading a factory system who needs precise equalization and robust pre-amp outputs will find the S4EQ useful. It’s especially suitable when you want a dedicated subwoofer control and professional-grade connectors without adding a large processor. Sound Storm Laboratories backs the unit with a one-year online dealer warranty when purchased through authorized Amazon channels, making it a practical choice for system upgrades and tuned installs.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the S4EQ support multiple source inputs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It has two source inputs and an input selector for switching between devices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What frequencies do the EQ bands cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The four bands are centered at 40 Hz, 150 Hz, 1 kHz, and 20 kHz with ±18 dB range.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sound Storm Laboratories","offers":[{"title":"Default Title","offer_id":48413417865373,"sku":"B000O50VEQ","price":54.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/sound-storm-s4eq-front-panel.jpg?v=1781264529","url":"https:\/\/nexoltic.com\/products\/sound-storm-laboratories-s4eq-4-band-car-audio-equalizer","provider":"Nexoltic","version":"1.0","type":"link"}