Comparing 2 robot vacuums
Your shortlist side by side: today’s price, our score and every fact the maker states.
Green is the best of these 2, also when they share the lead.
Drag a model by its header to move its column, or use the arrows.
Sony MDR-7506 × | Edifier W830NB × Best on 1 fact | |
|---|---|---|
| Most important facts | ||
| The lowest price today at a shop that delivers to you, delivery included. A price with an asterisk comes from a shop abroad, and its delivery cost is our own estimate. Lowest price | € 113bol.com | € 64bol.com best |
| Our own score out of 10: 60% the maker’s facts and 40% shop ratings. Price does not count. Score | not in our ranking | |
| The average of the stars buyers give at the shops, with the number of reviews behind it. We only compare it from 20 reviews. Customer rating | – | – |
| How the headphones cancel outside noise with microphones. Hybrid uses microphones outside and inside the cup, adaptive also adjusts to the sound around you. When it matters
When it matters less
Source
| None (assumed) | Hybrid |
| How long the headphones or the earbuds play on one charge with noise cancelling on, as the maker states it. When it matters
When it matters less
Source
| – | 54 h |
| What the headphones or one earbud weigh. Lighter is more comfortable for hours at a time. In this comparison
When it matters
When it matters less
Source
| 230 g | 267 g |
| The Bluetooth version. A newer one connects more steadily and uses less power, if the phone has it too. Source
| – | 5.4 |
| How the sound is packed for Bluetooth. AAC suits iPhones, aptX and LDAC carry more detail from Android phones that support them. When it matters
When it matters less
Source
| – | SBC, LDAC |
| Connected to two devices at once, such as a phone and a laptop, and switching by itself to the one that plays. When it matters
When it matters less
Source
| – | yes |
| Rank | ||
| Where the model stands in our ranking, among the headphones of the same type. Rank | – | rank 17 of 35 with an over-ear fit |
| Battery | ||
| How long they play on one charge with noise cancelling off. Source
| – | 94 h |
| How long a full charge takes. Source
| – | 90 min |
| The case or the headphones charge on a Qi pad, without a cable. Source
| – | no (assumed) |
| The plug the headphones or their case charge through. Source
| – | USB-C |
| Build and fit | ||
| How the headphones sit: over the ear, on the ear, in the ear canal, in the outer ear, beside the ear or on the cheekbone. Source
| Over-ear | Over-ear |
| Two separate earbuds with no wire between them, charged in a case. Source
| no | no |
| They play over Bluetooth, without a cable to the phone. Source
| no | yes |
| The plug for a cable, so you can also listen wired, for instance on a plane or with a battery that has run out. Source
| 3.5 mm jack | USB-C only |
| They play sound over a USB-C cable, straight from a phone or a laptop. Source
| no (assumed) | yes |
| Whether the ear cups are closed or open at the back. Closed keeps sound in and out, open sounds more spacious but lets everyone around you hear. Source
| Closed-back | – |
| The kind of speaker inside. Dynamic drivers are the most common. Planar and electrostatic ones are mostly found in expensive headphones for home listening. Source
| Dynamic | Dynamic |
| The diameter of the speaker inside. A bigger driver does not by itself mean better sound. In this comparison
Source
| 40 mm | 40 mm |
| They fold up to take less room in a bag. Source
| – | no (assumed) |
| Warranty and support | ||
| The code the maker gives this model, as on the box. Maker model number | MDR-7506 | EDF200163 |
| Sound | ||
| The lowest tone the maker says they play. It says little about how the bass actually sounds. In this comparison
Source
| 10 Hz | 20 Hz |
| The highest tone the maker says they play. Adult hearing stops well below most figures. In this comparison
Source
| 20,000 Hz | 40,000 Hz |
| The electrical resistance. Wired headphones with a high impedance need an amplifier to play loud enough. Source
| 63 Ω | – |
| How loud they play on a given signal. A higher figure plays louder from a weak source, such as a phone. Source
| 106 dB SPL | – |
| You can adjust bass and treble in the maker’s app. Source
| no (assumed) | yes |
| Sound that seems to come from around you rather than from inside your head. Source
| no (assumed) | yes |
| Certified by the Japan Audio Society for high-resolution sound, wired or, with Hi-Res Audio Wireless, over Bluetooth. Source
| – | Hi-Res Audio Wireless |
| Noise cancelling | ||
| Can work as a hearing aid for mild to moderate hearing loss, where the maker has it approved. Source
| – | no (assumed) |
| Wireless | ||
| Whose phones the headphones are made for. Some features, such as one-tap pairing or spatial audio, work only with that maker’s phones. Source
| Any phone | Any phone |
| How many devices they stay connected to at once. Source
| – | 2 |
| The newer Bluetooth standard for sound, with the LC3 codec: better sound on less power, with phones that support it. Source
| – | no (assumed) |
| Can listen to a Bluetooth broadcast, such as a TV, an airport announcement or a friend sharing music. Source
| – | no (assumed) |
| In use | ||
| The music pauses when you take them off and plays on when you put them back. Source
| – | no (assumed) |
| The name of the maker’s app. Source
| – | EDIFIER ConneX |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.

