{"product_id":"the-quiet-signal-k66-anc-earbuds","title":"The Quiet Signal | K66 ANC Earbuds with 48 Hour Playback","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eNoise cancellation is usually sold as a number, and the number is usually a lie. What actually matters in a train carriage or a shared office is whether the low rumble of machinery drops away enough that a podcast becomes intelligible at a lower volume. The K66 targets that specific band with up to ninety percent reduction, which for most listeners is the difference between turning the volume up and leaving the earbuds in.\u003c\/p\u003e\n\u003cp\u003eThe acoustic side is built around a 14.2 millimeter dynamic driver with a 32 ohm impedance, which is a larger diaphragm than the category average and the reason voices carry weight rather than sounding thin. Bluetooth 5.3 holds a stable link at ten to twenty meters, the case carries a 400mAh cell for up to forty-eight hours of total playback, and IPX7 sealing means rain, sweat and an accidental pocket wash are survivable events rather than replacements.\u003c\/p\u003e\n\u003cp\u003eThree sizes of silicone pads ship in the box because seal quality determines everything above the driver: bass response, passive isolation, and how much work the active system has to do. Charging is over USB-C, controls are on the buds themselves, and a microphone handles calls without reaching for the phone.\u003c\/p\u003e\n\u003cp style=\"font-style:italic;color:#1a3a5c;border-left:3px solid #1a3a5c;padding-left:14px;margin-top:20px;\"\u003eSilence is a feature you can hear the moment it starts.\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #eee;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003eUp to 90 percent active noise cancellation tuned for low-frequency rumble\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003e14.2 mm dynamic driver with 32 ohm impedance for full-bodied vocals\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003eBluetooth 5.3 with a stable 10 to 20 meter range\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003e400mAh charging case delivering up to 48 hours of total playback\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003eIPX7 waterproofing against rain, sweat and accidental immersion\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003eOn-ear controls plus built-in microphone for calls\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"color:#1a3a5c;margin-right:8px;\"\u003e✦\u003c\/span\u003eThree pad sizes included for a proper acoustic seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv style=\"height:18px;\"\u003e\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eDriver\u003c\/strong\u003e\u003cspan\u003e14.2 mm dynamic\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eImpedance\u003c\/strong\u003e\u003cspan\u003e32 ohm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eBluetooth\u003c\/strong\u003e\u003cspan\u003eVersion 5.3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eWireless range\u003c\/strong\u003e\u003cspan\u003e10 to 20 m\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eBattery, case\u003c\/strong\u003e\u003cspan\u003e400mAh\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003ePlayback\u003c\/strong\u003e\u003cspan\u003eUp to 48 hours total with case\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eNoise cancellation\u003c\/strong\u003e\u003cspan\u003eUp to 90 percent ANC reduction\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eWater resistance\u003c\/strong\u003e\u003cspan\u003eIPX7\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eCharging\u003c\/strong\u003e\u003cspan\u003eUSB Type-C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eControls\u003c\/strong\u003e\u003cspan\u003eOn-ear buttons with volume control\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eMicrophone\u003c\/strong\u003e\u003cspan\u003eBuilt in for calls\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;gap:12px;\"\u003e\n\u003cstrong style=\"min-width:180px;display:inline-block;color:#1a3a5c;\"\u003eIn the box\u003c\/strong\u003e\u003cspan\u003eEarbuds, charging case, cable, spare pads, manual\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv style=\"height:18px;\"\u003e\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eBuilt For\u003c\/h3\u003e\n\u003cp\u003eCommuters on rail and bus routes where engine noise is constant. Open-plan offices where a conversation two desks away derails concentration. Gym sessions and runs where sweat rules out most electronics. Students in libraries and shared dorm rooms, and anyone taking calls while walking, where the microphone and seal matter as much as the driver.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv style=\"height:18px;\"\u003e\u003c\/div\u003e\u003cdiv class=\"product-notes\"\u003e\n\u003ch3\u003eDesign Notes\u003c\/h3\u003e\n\u003cp\u003eActive noise cancellation works best where the noise is predictable. Engine drone, air handling, and the low hum of an office floor are exactly the frequencies a feed-forward system can sample and invert. Voices and sudden impacts are harder, which is why the honest expectation is a meaningfully quieter room rather than a silent one.\u003c\/p\u003e\n\u003cp\u003eDriver size explains a lot of the listening experience. A 14.2 millimeter diaphragm moves more air than the eight or ten millimeter units common at this price, so bass arrives with body and vocals keep their lower harmonics. High impedance is not the goal here; at 32 ohms the buds are easy to drive from a phone without a dongle.\u003c\/p\u003e\n\u003cp\u003eSeal, then tuning. A loose pad leaks bass and forces the ANC system to work harder, which drains the battery faster and produces the pressure sensation some listeners dislike. Spend two minutes finding the right pad and the rest of the specification list behaves as written.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv style=\"height:18px;\"\u003e\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: Does ANC work without music playing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eYes. Noise cancellation runs independently of playback, which makes the earbuds usable purely as ear protection in noisy environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: How long does a single charge last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eThe case carries a 400mAh cell for up to 48 hours of total listening before the case itself needs charging over USB-C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: Can I wear them in the rain?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eIPX7 sealing covers rain, sweat and brief immersion. Do not use them for swimming, and dry the case before closing it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: Will they stay in during exercise?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eFit depends on pad size. Try each of the three included sizes and choose the one that seals without pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: Do they have a microphone for calls?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eYes, with on-ear controls for answering and volume control, so the phone can stay in a pocket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: Can I use one earbud at a time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eYes. Single-bud use works for calls and podcasts, which is useful when you need to stay aware of your surroundings.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"margin:0 0 5px;\"\u003e\u003cstrong\u003eQ: How do I clean the pads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#444;\"\u003eRemove the silicone pad, rinse in warm water, and let it dry fully before refitting. Wipe the nozzle with a dry cloth only.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322422.jpg?v=1780322423\" alt=\"product detail image\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 auto 14px;display:block;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322423.jpg?v=1780322424\" alt=\"product detail image\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 auto 14px;display:block;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322425.jpg?v=1780322426\" alt=\"product detail image\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 auto 14px;display:block;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322427.jpg?v=1780322428\" alt=\"product detail image\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 auto 14px;display:block;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322428.jpg?v=1780322429\" alt=\"product detail image\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 auto 14px;display:block;border-radius:6px;\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"The Quiet Signal | K66 ANC Earbuds with 48 Hour Playback\",\"description\":\"K66 wireless earbuds with up to 90 percent ANC, 14.2mm drivers, Bluetooth 5.3, IPX7 waterproofing and 48 hours of playback with the charging case.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Kuizil\"},\"sku\":\"K66-TWS\",\"url\":\"https:\/\/eastsupplier.com\/products\/the-quiet-signal-k66-anc-earbuds\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"41.73\",\"priceValidUntil\":\"2027-12-31\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/eastsupplier.com\/products\/the-quiet-signal-k66-anc-earbuds\"},\"aggregateRating\":{\"@type\":\"AggregateRating\",\"ratingValue\":\"4.8\",\"reviewCount\":\"3\"}}\u003c\/script\u003e","brand":"EastSupplier Platform","offers":[{"title":"White \/ United States","offer_id":49635957965023,"sku":"1005011654271135-White-United States","price":41.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/fix_1780322422.jpg?v=1780322423","url":"https:\/\/eastsupplier.com\/ko-fr\/products\/the-quiet-signal-k66-anc-earbuds","provider":"EastSupplier Platform","version":"1.0","type":"link"}