We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 6 min read · Independent comparison
If you want one pair of headphones that does the heavy lifting — active noise cancelling, Hi-Res wireless audio and marathon battery life — choose Anker Soundcore Space One; if you need three separate audio devices for different moments of your day in a single purchase, choose Memorex 3-in-1. Both put a 40mm dynamic driver at the centre of their sound, but they are built for completely different buyers.
• Anker Soundcore Space One — biggest strength: adaptive active noise cancelling plus LDAC Hi-Res wireless audio from a customized 40mm dynamic driver, with 40 hours of playtime with ANC on (55 hours with it off).
• Anker Soundcore Space One — biggest trade-off: it is a single-purpose over-ear headphone with no wired jack, so everything runs through Bluetooth and the app.
• Memorex 3-in-1 — biggest strength: three devices in one box — over-ear Bluetooth headphones, true wireless earbuds and a portable speaker — all on Bluetooth 5.1.
• Memorex 3-in-1 — biggest trade-off: the headphones are rated at about 4 hours of playtime, and there is no noise cancelling anywhere in the bundle.
• Pick Anker Soundcore Space One if you want serious noise reduction and long listening sessions on flights, trains and commutes.
• Pick Memorex 3-in-1 if you want headphones, earbuds and a speaker for the price of one purchase and you switch between listening situations constantly.
The Space One is a travel-and-focus headphone first. Its adaptive noise cancelling listens to what is around you and re-calibrates on the fly, so it keeps working even when the ear cups are not sitting perfectly on your ears. Anker rates it as reducing noise by up to 98% in its own lab testing, and the upgraded structure is tuned specifically at mid and high frequencies — the chatter, announcements and cabin hiss that actually break your concentration. That is the feature you are buying here.
Who should buy it: commuters, frequent flyers, open-plan-office workers and anyone who wants one headphone to disappear into for hours. Who should skip it: if you want earbuds for the gym and a speaker for the kitchen, this gives you neither — and there is no headphone jack, so listening is wireless-only.
Memorex 3-in-1: Who It's For
The Memorex bundle is not really a headphone comparison — it is a coverage play. One purchase gets you over-ear Bluetooth headphones with a 40mm driver unit, a set of true wireless earbuds, and a compact portable speaker. The headphones have soft padded cushions, an adjustable headband, a 90-degree rotating foldable design and a rubber-coated finish, with roughly 4 hours of playtime at 50% volume. The earbuds stretch to about 7.5 hours at 50% volume with a built-in mic and touch controls, and come with three sizes of ear tips. The speaker adds hands-free calling and USB, TF and FM inputs.
Everything runs Bluetooth 5.1 with a 10-metre range, and the frequency range is a standard 20 Hz to 20,000 Hz. Charge time is about 4 hours. In the box you get all three devices, three USB-C charging cables, spare ear tips and three user manuals, backed by a 1-year warranty. Note that Memorex lists the headphones' ear placement as on-ear while the earpiece shape is listed as over-ear, and the finish is fabric and rubber in blue.
Who should buy it: someone outfitting a household, a student, a gift buyer, or anyone who wants a headphone, an earbud and a speaker without buying three products separately. Who should skip it: if noise cancelling, Hi-Res codecs or all-day battery are on your list, none of the three devices delivers them.
• Best for noise cancelling → Anker Soundcore Space One. Adaptive ANC, tuned against mid and high frequencies, up to 98% reduction in lab testing.
• Best for battery life → Anker Soundcore Space One. 40 hours with ANC on, 55 with it off, versus roughly 4 hours on the Memorex headphones.
• Best for audio quality potential → Anker Soundcore Space One. LDAC Hi-Res Wireless and a 20 Hz–96 kHz range against a 20 Hz–20 kHz range.
• Best for getting more devices → Memorex 3-in-1. Headphones, true wireless earbuds and a portable speaker in one bundle.
• Best for workouts and movement → Memorex 3-in-1. The TWS earbuds with S/M/L tips are the only genuinely active-lifestyle option here.
• Best for sharing music out loud → Memorex 3-in-1. The only one of the two with a speaker, plus hands-free calling and FM.
• Best for long-haul travel → Anker Soundcore Space One. ANC, a protective case, a 259 g build and rotating ear cups.
• Best for a household or gift → Memorex 3-in-1. Three devices and three charging cables cover several people at once.
In my opinion, the Anker Soundcore Space One is the better buy for most people who are shopping for headphones specifically. It wins on the things that decide whether you actually enjoy wearing a headphone every day: real adaptive noise cancelling, LDAC Hi-Res audio and battery life measured in days rather than hours. I would only steer you to the Memorex 3-in-1 if your goal is breadth — three devices covering the gym, the commute and the kitchen table. Decide whether you want one thing done well or three things done adequately, and the choice makes itself. Either way, check the current price on Amazon before you commit.
FAQ
what is 40mm driver in headphones
which driver is best for headphones
There is no single best number. Driver size is only one factor; material, tuning, enclosure design and codec support matter just as much. A 40mm driver with LDAC, like the Space One's, will outperform a 40mm driver limited to a basic Bluetooth codec for detail.
is 40mm driver good for headphones
Yes — 40mm is a solid, well-rounded size for over-ear headphones. It is large enough for satisfying low end and small enough to stay comfortable. Both the Space One and the Memorex headphones use one, though the Space One pairs its driver with adaptive ANC and Hi-Res wireless audio.
Neither has a headphone jack. Both are wireless-only over Bluetooth — the Space One on Bluetooth 5.3 with a 15-metre range, the Memorex bundle on Bluetooth 5.1 with a 10-metre range. The Space One does include an AUX cable in the box, but the connectivity itself is listed as wireless.
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