How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want plug-and-play wired music listening with no battery to think about, choose HAIMLJLBK 2; if you need long wireless sessions, over-ear comfort and EQ modes you can switch on the fly, choose LORELEI Q30.
These two are barely the same category of product. One is a two-pack of USB-C in-ear buds built around a DAC chip and a wired connection. The other is a foldable over-ear Bluetooth headset with a 60-hour battery and a physical 3.5 mm jack as backup. If your phone is a recent iPhone or a modern Samsung Galaxy with no headphone jack, both will physically connect — but they solve completely different problems.
• HAIMLJLBK 2 — biggest strength: a two-pack of USB-C wired earbuds with a built-in DAC, inline mic and remote, plus magnets and an anti-tangle design. You get a spare pair in the box.
• HAIMLJLBK 2 — biggest trade-off: it's wired and in-ear only. No Bluetooth, no battery, and you're tethered to the port. Its "noise control" is sound isolation from the fit, not active cancellation.
• LORELEI Q30 — biggest strength: 60 hours of playback per charge, Bluetooth 6, three EQ music modes, 40 mm drivers, and over-ear cups that fold into a supplied case.
• LORELEI Q30 — biggest trade-off: it's heavier and bulkier than buds, the controls are push-button rather than touch, and it needs a 1.5-hour charge to run wireless.
• Who each is for: HAIMLJLBK 2 is for people who want a no-fuss wired pair (and a backup) for calls and everyday music. LORELEI Q30 is for people who want one comfortable over-ear set for long home, travel and tablet sessions.
The HAIMLJLBK 2 is a wired USB-C in-ear headphone with a dynamic driver covering 20 Hz to 20,000 Hz, and the headline feature is the DAC chip built into the plug end. What that means in plain terms: the earbuds handle the digital-to-analog conversion themselves instead of relying entirely on whatever your phone or laptop puts out. That's the main reason a wired USB-C set can sound cleaner than a cheap adapter dongle. The enclosure mixes aluminium with thermoplastic elastomer, so the housings feel more substantial than plain plastic, and the rounded tips are shaped for an in-ear seal.
The practical stuff is where it earns its place. There's an inline remote with a microphone and volume control, so you can take calls, skip tracks and adjust levels without unlocking your phone. The cable is designed to resist tangling and the earbuds have built-in magnets so they clip together when you pull them out — a small thing that matters a lot if you commute or stuff them in a jacket pocket. Sound isolation comes from the tip seal, not electronics, so it blocks some ambient noise simply by sitting in your ear canal. It ships as a two-pack in a cushioned box, and it's rated for adults, teens and youth, with a one-year manufacturer warranty.
Who should buy it: anyone with a USB-C device — iPhone 16/15 series, iPhone 17 Pro Max, Galaxy S23/S22/S21, Pixel, tablets and laptops — who wants music and calls to just work the moment they plug in. Zero charging, zero pairing. The second pair is genuinely useful: leave one at your desk, one in your bag.
Who should skip it: if you want to move around the room while music plays, or you hate cables catching on things, this isn't the product. There's no Bluetooth here at all. And if you strongly prefer the feel of over-ear cups, in-ear tips won't convert you.
The LORELEI Q30 is the opposite philosophy: a wireless over-ear headphone that treats battery life as the main event. LORELEI rates it at 60 hours of average playback from a 1.5-hour charge, which is the kind of figure that means you can go a week or two of normal listening without hunting for a cable. It runs Bluetooth 6 with a 10-metre range, and latency is listed at 40 milliseconds — low enough that lip-sync on video is generally not distracting.
The audio side is built around 40 mm dynamic drivers with 32 ohm impedance, 110 dB sensitivity and a 20 Hz–20,000 Hz range. Those numbers describe an easy-to-drive, fairly loud headphone with the headroom for the "HiFi stereo deep bass" tuning LORELEI advertises. There are three EQ music modes you can switch between, which is the feature I'd actually use most: one profile for bass-heavy tracks, another for vocals, another for a flatter listen. Noise control is listed as environmental noise cancellation plus sound isolation — the over-ear cups physically block sound, and the mic side reduces background noise on calls.
Comfort and portability are clearly designed for long sessions. At 228 g with faux leather, ABS and metal construction, it's light for an over-ear, and the earcups fold down into a black carrying case measuring roughly 17.5 cm by 20.5 cm with a 6 cm depth. There's also a 3.5 mm jack, so if the battery is flat or you're on a plane with a seat-back screen, you can run it wired. Controls are push-button rather than touch-sensitive — some people prefer that because buttons don't misfire when you adjust the headband.
Who should skip it: if you want maximum pocketability, over-ear cups are the wrong shape. If you need a spare pair, this is a single-item box. And if you never want to charge anything, the wired alternative wins by default.
Side-by-Side: Which Should You Choose?
• Best for battery life → LORELEI Q30. 60 hours per charge versus no battery at all.
• Best for zero setup → HAIMLJLBK 2. Plug into USB-C and play; no pairing, no charging, no app.
• Best for long listening sessions → LORELEI Q30. Over-ear cups and 228 g of weight distribute pressure across your head rather than inside your ear canal.
• Best for calls on the move → HAIMLJLBK 2. The inline mic and remote sit right on the cable, so the mic is close to your mouth and the controls are always in reach.
• Best for travel and flights → LORELEI Q30. The foldable design plus the supplied case, plus the 3.5 mm jack for in-flight systems.
• Best for sound tuning flexibility → LORELEI Q30. Three EQ music modes versus a fixed tuning.
• Best if you lose or break earbuds often → HAIMLJLBK 2. Two pairs ship in the box.
• Best for blocking nearby noise passively → both, differently. LORELEI Q30 seals around your ear; HAIMLJLBK 2 seals inside it.
If I had to pick one for music, I'd buy the LORELEI Q30. In my opinion the 60-hour battery, the three EQ modes, the 40 mm drivers and the foldable over-ear comfort make it the more versatile music headphone for home, travel and tablet listening, and the 3.5 mm jack means it still works when the battery doesn't. I'd only choose the HAIMLJLBK 2 instead if wired simplicity is the whole point for you — no charging, no pairing, plus a spare set in the box. For a USB-C phone owner who wants music to start the second they plug in, that's a genuinely better fit. Check the current price on Amazon for both before you commit, since the value gap between a two-pack of wired buds and a wireless over-ear can shift a lot.
how to make headphones music louder
First check the source: raise the volume on the phone itself, then on any inline or on-ear control. On the HAIMLJLBK 2, use the inline remote's volume buttons; on the LORELEI Q30, use the push-button controls. Also confirm the earbud or earcup seal is tight — a poor seal leaks bass and makes everything sound quieter than it is.
how to fix stereo headphones
Start with the connection. On the HAIMLJLBK 2, reseat the USB-C plug and try the second pair from the box to isolate whether the fault is the cable or the device. On the LORELEI Q30, toggle Bluetooth off and on, or plug in the 3.5 mm cable to test whether the drivers work while bypassing wireless. If only one side is silent on both pairs, the problem is usually the source device, not the headphones.
how to test stereo headphones
Play a track you know well and listen for whether vocals sit centred and instruments spread left and right. Check both channels individually by panning a test tone left and right. On the LORELEI Q30 you can also cycle the three EQ music modes and confirm the change is audible in both ears, which tells you both drivers are working.
how to make stereo headphones
If you mean getting a stereo image out of a mono-sounding source, make sure the audio file itself is stereo and that any mono accessibility setting on your phone is switched off. Both of these headphones reproduce a stereo signal from a stereo source; neither can invent separation from a mono track. Also check that the plug is fully seated — a half-inserted connector is a classic cause of collapsed stereo.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: ZANCHIE Headphone vs Oraolo Airclip AC700: Wireless Stereo, GWCASE Hard Shell Headphone vs PLAFOPE 2pcs, Audio-Technica ATH-TWX9 vs Barks Classroom Headphones Pack, Xmenha Mini Invisible Sleep vs INSONIXN Smallest Invisible Earbuds