If you want compact, adaptive noise-cancelling earbuds for audiophiles, choose Anker Soundcore; if you need foldable over-ear headphones with long battery life and two-device Bluetooth connections, choose Belkin SoundForm Surround. Anker makes the stronger case for tuning out changing surroundings, while Belkin offers a familiar around-ear design and useful call and connection features. For audiophiles deciding between the two, the real question is whether you value in-ear noise control or over-ear comfort and convenience more.
• Anker Soundcore Space A40: Its standout strength is adaptive active noise cancellation, with up to 50 hours of listening when you include the case. The trade-off is an in-ear fit, which is not for everyone.
• Belkin SoundForm Surround: Its strengths are an over-ear fit, up to 60 hours of battery life, and Bluetooth multipoint for two devices. The trade-off is that its noise-cancelling feature is specified for calls, not adaptive listening noise cancellation.
• Choose Anker Soundcore if you want small earbuds that adjust noise cancellation to your surroundings and support LDAC audio.
• Choose Belkin SoundForm Surround if you prefer cushioned ear cups, a foldable design, and an easy way to switch between two Bluetooth devices.
The Soundcore Space A40 is the more focused choice for someone who wants earbuds designed to reduce distractions. Its adaptive active noise cancellation detects surrounding noise and adjusts accordingly, making it a good fit on a commute, in a shared workspace, or while traveling. The stated noise reduction is up to 98%, though that figure is not a promise that every sound will disappear in every setting.
Sound quality is another part of its appeal. The double-layer diaphragm drivers are described as producing strong bass, clear mids, and bright treble, and LDAC mode supports Hi-Res Audio Wireless. That gives sound-conscious listeners specific features to weigh, rather than just a general claim of good sound. Bluetooth 5.2 handles the wireless connection, and the listed range is 10 meters.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-22 · 6 min read · Independent comparison
The earbuds are small and lightweight, with an ergonomic shape intended for extended wear. Each charge is listed for up to 10 hours, with up to 50 hours total when the charging case is included. A 10-minute quick charge is described as providing four hours of listening. I’d point someone toward Anker if they want portable earbuds, adaptive listening noise cancellation, and a compact everyday setup. I’d steer them away if they strongly prefer headphones that sit around the ears, or if switching between two Bluetooth devices is a priority—the supplied details don’t list multipoint for the Space A40.
Belkin takes the over-ear route. The SoundForm Surround has cushioned ear cups, an adjustable headband, and a foldable design. That combination may appeal to someone who finds earbuds uncomfortable or wants headphones that can be folded for travel and stored between listening sessions. Its 40 mm dynamic drivers are intended for music and everyday listening, including podcasts.
The headline practical advantage is battery life: Belkin lists up to 60 hours. Bluetooth 5.4 supports wireless listening, and multipoint lets the headphones remain connected to two devices at once. That is useful if you regularly move between a laptop and a phone, such as listening to audio at your desk but needing to take a call on your mobile.
One distinction matters: Belkin’s environmental noise cancellation is specified for clearer phone calls through the built-in microphone. The product details do not describe adaptive active noise cancellation for reducing noise you hear while listening. The box information also lists a 3.5 mm AUX cable and a USB-C charging and audio cable, giving the headphones wired-use options. I’d choose Belkin for over-ear comfort, longer stated battery life, and device switching. I’d skip it if my main goal were earbuds with adaptive noise cancellation or a specifically stated LDAC mode.
• Best for adaptive noise cancellation while listening → Anker Soundcore. Space A40 detects surrounding noise and adjusts its cancellation, with noise reduction described as up to 98%. Belkin’s listed environmental noise cancellation is aimed at phone-call clarity.
• Best for longer stated battery life → Belkin SoundForm Surround. It is listed for up to 60 hours, compared with up to 50 hours for the Space A40 when its case is included.
• Best for pocketable, lightweight listening → Anker Soundcore. These are small in-ear earbuds with a charging case. Belkin is a foldable over-ear pair, a different kind of carry.
• Best for cushioned over-ear comfort → Belkin SoundForm Surround. Its soft ear cups and adjustable headband suit listeners who prefer headphones resting around the ears.
• Best for switching between a computer and phone → Belkin SoundForm Surround. Bluetooth multipoint supports simultaneous connections to two devices.
• Best for a quick battery top-up → Anker Soundcore. The stated 10-minute charge provides four hours of listening. Belkin’s listed battery life is longer overall, but the supplied details don’t specify a comparable quick-charge listening time.
• Best for a wired listening option → Belkin SoundForm Surround. Its included accessories list a 3.5 mm AUX audio cable and a USB-C charging and audio cable.
• Best fit for someone seeking the best lightweight gaming headphones for audiophiles → Anker Soundcore, with a caveat. The small earbuds and wireless connection may suit a lightweight setup, but neither product’s supplied details establish gaming-specific features such as a low-latency mode or microphone performance for gaming. Choose based on fit and the audio features you actually need, not an assumed gaming advantage.
There are also clear limits to what the available specifications can settle. They don’t establish which pair has a more accurate sound signature, how well either fits a particular person, or how much outside noise each blocks in a given room. Anker lists LDAC and adaptive cancellation; Belkin lists over-ear cushioning, multipoint, and wired accessories. Those are concrete differences, but they don’t make one pair universally right for every listener.
I would choose the Anker Soundcore Space A40 for audiophiles who want compact earbuds, adaptive noise cancellation, and the stated option of LDAC audio. Its shorter total battery figure is a real trade-off against Belkin’s 60 hours, but its listening-focused noise control gives it the edge for my priorities. If over-ear comfort and two-device switching matter more to you, Belkin is the more sensible pick.
The Anker Soundcore Space A40 is the clearer match on paper because it has adaptive active noise cancellation that adjusts to surrounding noise. Belkin lists environmental noise cancellation for calls, not adaptive cancellation for the listener.
Belkin lists up to 60 hours of battery life. Anker lists up to 50 hours with the charging case, while each Space A40 earbud is listed for up to 10 hours per charge.
Belkin SoundForm Surround supports Bluetooth multipoint for two devices. The supplied Space A40 details don’t list multipoint, so I would not choose it specifically for simultaneous two-device connection.
The Space A40’s small, lightweight in-ear design may be the more plausible option for someone considering earbuds for rest. But neither product’s supplied details describe sleep-specific features, and comfort while lying down will depend on the listener and sleeping position.
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