{"product_id":"the-bass-meridian-semi-open-anc-earbuds","title":"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp style=\"text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:#8a6d3b;margin:0 0 14px;\"\u003eBaseus Bass BS1 NC\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;margin:0 0 16px;\"\u003eThe interesting decision inside the Bass BS1 NC is the semi-open shell. Fully sealed buds cancel more noise and feel like pressure in the ear after forty minutes; open designs breathe but leak everything. This sits between the two, using a hybrid sensor array to read the environment in real time and cancel up to 40dB without sealing the ear canal shut. The result is quiet that does not feel like a plug.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;margin:0 0 16px;\"\u003eThe driver is a 13mm LCP diaphragm, a liquid-crystal polymer film chosen for stiffness at low mass. Low frequencies arrive with weight and stay composed when the track gets dense, which is the whole reason a bass-forward design can still be called hi-fi. LDAC support carries the detail, and the tuning leans warm rather than flat, so percussion has body without swallowing the vocal.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;margin:0 0 16px;\"\u003eEndurance is rated at 40 hours with the case, and the enclosure is IP55 rated, meaning it tolerates dust and directional water rather than a light drizzle only. A 3+3 microphone arrangement handles calls with AI-driven environmental noise cancellation, so the wind on a street corner gets filtered before it reaches the person you are talking to. Touch panels are absent by design: control runs through the stems and the app, which avoids accidental skips when adjusting the fit.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;font-style:italic;color:#555;margin:6px 0 0;\"\u003eQuiet, without the sensation of being sealed away from the world.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin:28px 0;border:0;border-top:1px solid #ececec;\"\u003e\n\u003cdiv class=\"product-features\"\u003e\n\u003ch3 style=\"font-size:19px;margin:0 0 14px;\"\u003eWhat The Build Gets Right\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ Semi-open acoustic design that cancels without the sealed-ear pressure of closed buds\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ Adaptive ANC rated to 40dB, with real-time sensor adjustment to the surroundings\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ 13mm LCP diaphragm driver tuned for controlled low-end extension\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ LDAC, AAC and SBC codec support, hi-res streaming where the source allows\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ 3+3 microphone array with AI ENC for calls in noisy places\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ Up to 40 hours of total playback with the charging case\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.65;font-size:15px;\"\u003e✦ IP55 dust and water resistance for commuting, gyms and outdoor work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specs\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin:0 0 14px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eDriver\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003e13mm LCP diaphragm, dynamic\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eAcoustic design\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eSemi-open in-ear\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eNoise cancelling\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eAdaptive, up to 40dB\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eMicrophones\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003e3+3 array with AI environmental noise cancellation\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eCodecs\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eLDAC, AAC, SBC\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eWireless\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eBluetooth with LE Audio support\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eBattery life\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eUp to 40 hours with charging case\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eWater resistance\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eIP55\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003eCharging\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eUSB Type-C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px solid #f2f2f2;font-size:14.5px;line-height:1.6;\"\u003e\n\u003cstrong style=\"font-weight:600;color:#222;flex:0 0 42%;\"\u003ePackage\u003c\/strong\u003e\u003cspan style=\"color:#444;text-align:right;\"\u003eEarbuds, charging case, cable, manual\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-applications\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin:0 0 12px;\"\u003eWhere It Earns Its Place\u003c\/h3\u003e\n\u003cp style=\"font-size:15.5px;line-height:1.8;margin:0 0 14px;\"\u003eThis is the pair that suits a long working day rather than a single commute. The semi-open fit keeps ears comfortable through back-to-back calls, the ENC array handles a home office with a fan running, and the warm tuning makes podcasts and bass-heavy playlists equally tolerable at low volume. For runners and gym sessions the IP55 rating covers sweat and rain, and the stem controls work with damp fingers where touch panels usually fail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin:0 0 14px;\"\u003eQuestions Buyers Ask Before Ordering\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eIs a semi-open design worse at cancelling noise?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eSlightly, on paper, than a fully sealed bud at the same rating. In practice the adaptive system adjusts to the leakage, so low-frequency drone from engines and air conditioning still drops away. Voices and sudden clatter come through more than they would on a closed design, which many people prefer for safety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eDoes the 40dB figure apply to all frequencies?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eNo. Cancellation depth peaks in the low-frequency band where engine and motor noise live, and falls off toward the midrange. That is true of every ANC product on the market, and it is why voices remain audible even with cancellation at maximum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eHow long does one charge last with ANC on?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eExpect roughly 8 hours per charge with cancellation active, and about 40 hours in total once the case is counted. Charging is over USB-C and a short top-up covers a commute.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eWill LDAC drain the battery faster?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eYes, modestly. LDAC transmits a much larger stream than SBC, so the buds work harder. If endurance matters more than detail on a given day, switching the codec to AAC in the app extends the runtime noticeably.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eCan I use one bud on its own?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eYes. Either bud works independently for calls and music, which is useful for driving or for keeping one ear on a conversation while the other stays occupied.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 6px;font-size:15px;\"\u003eWhat is in the box?\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;line-height:1.75;color:#444;\"\u003eThe earbuds, the charging case, a USB-C cable and the manual. Ear tips ship in the sizes fitted at the factory, and the case is compact enough for a jeans pocket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\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\/Sdac44d48b68c4e319e11f1d7b2c7cb820_9752a92d-b5eb-42cb-97b6-eef27445e028.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1d6c468ed2b94582936f2a832270972eA_50173e3e-a1f1-4e72-83ea-af6d5dc10ba6.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc7ecc9ccbada4aa297e6a78f00baa800K_73b5bfa1-c902-47f7-bd18-3ccd45310e18.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc6de93ec3868468093f321a959334b2fl_6ee3efc9-223b-4b74-8aa7-5e3e89f3ed95.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S74cb45a774924ff6a825d37cdc523e06t_c274fad5-f56e-4436-b9d2-b67f4168f1e3.webp?v=1784873195\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sdbb6206d0253400b8924446f35c397d4f_a3bb90fc-7ead-4aec-a142-2cad85f07389.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sd8fc524d6cda42618ef6017c01f26f0c3_c4de4f7f-cb37-4f19-9101-d9737b8c3bb0.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S892714380fb34abebef2b6287e98aab6H_fe3c9713-e90b-4db2-81f8-45e2dd57f336.webp?v=1784873194\" alt=\"The Bass Meridian | Semi-Open Adaptive ANC Earbuds with 40H Endurance\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:0 0 14px;border-radius:6px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eastsupplier-promise\" style=\"margin-top:32px;padding:18px 20px;background:#faf8f4;border-left:3px solid #8a6d3b;\"\u003e\n\u003cp style=\"margin:0;font-size:14.5px;line-height:1.75;color:#333;\"\u003e\u003cstrong\u003eThe EastSupplier Promise.\u003c\/strong\u003e Stocked and dispatched from our cross-border supply network, with tracked shipping, a 30-day return window on unused units, and support in English answered by people who handle the same SKUs daily. 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