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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 7 min read · Independent comparison
• Souz Collection Pure BEATZ Professional — biggest strength: 50mm speakers paired with neodymium magnets and a dedicated Acoustic Bass Booster, aimed squarely at deep, physical low end for DJ, live and studio work.
• Souz Collection Pure BEATZ Professional — biggest trade-off: It is strictly wired, so there is no Bluetooth, no battery and no noise cancelling — you are tethered to a 3.5mm jack.
• SXFJF Headphones Deep Heavy — biggest strength: A wireless, foldable over-ear design with active noise cancelling, a rechargeable battery and a built-in microphone for calls.
• SXFJF Headphones Deep Heavy — biggest trade-off: The bass is delivered through a "deep bass function" and tuning rather than a large dedicated driver, and the fit leans on ear-cup sealing rather than a studio-style build.
• Who each is for: Pick the Souz if you want a wired, bass-forward set for mixing, DJ sets or serious listening at a desk. Pick the SXFJF if you want one flexible headphone for commuting, calls, travel and everyday wireless listening.
The Souz Pure BEATZ SPB 018 is the more specialised of the two. Everything in its spec sheet points one direction: low end. The 50mm speakers are the headline — that is a large driver diameter, and large drivers generally move more air, which is exactly what you want when the goal is deep, weighty bass. Pair that with neodymium magnets (higher magnetic density, higher efficiency, so the driver converts power into sound more effectively) and a named Acoustic Bass Booster, and you have a headphone that was clearly voiced for bass-first material.
The build is aimed at working use, not casual use. It is an over-ear, dynamic design with aluminium enclosure material and leather cushions, and the aluminium matters: it is a stiffer, denser housing than plain plastic, which typically helps keep the low end controlled instead of rattling. The leather cushions are there for comfort over long sessions — the stated goal is reducing fatigue during extended wear, which makes sense for a headphone sold for DJ, live and studio duty. The 32 ohm impedance is a friendly figure: it is low enough that a phone, laptop or portable player can drive it without a separate amp. And the retractable cable plus folding over-ear design make it easier to pack than a fixed-cable studio can.
Buy it if you want a wired, bass-forward headphone for DJ practice, studio monitoring, or just listening at a desk where a cable is not a problem, and you like the idea of a 50mm driver doing the heavy lifting. Skip it if you need wireless freedom, calls, or noise cancelling for a commute — none of those are part of this design. It is also worth noting the gold-plated 3.5mm plug, which is a small but real detail aimed at keeping the connection clean over time.
The SXFJF Deep Heavy is the everyday, do-everything option. It is a Bluetooth over-ear headphone, and the feature list reads like a checklist of what most people actually want from a daily pair: wireless connection with stable audio/video syncing, hands-free calling via the built-in microphone, media controls on the headset, active noise cancelling, and a rechargeable battery charged over USB. If you want one headphone for the bus, the office and the flight, this is the one shaped for that life.
The bass story here is different. Instead of a large driver spec, SXFJF leans on a "deep bass function" that the brand describes as delivering strong bass with HD clarity, plus a closed-back design and noise-isolation pads. That combination is the classic way to get perceived bass on a wireless set: seal the ear cups tightly against your head and cut the outside noise, and the low end feels fuller because there is less ambient sound competing with it. The stated frequency response is 20–20000 Hz, which is the standard full-range window, and the 32 ohm impedance again means it plays happily from a phone.
Comfort and portability are the other pillars. Ergonomic, ultra-soft ear cups are specified for long wear, and the whole thing is foldable and lightweight at 240 g, which is genuinely light for an over-ear headphone. Buy it if you want wireless convenience, noise cancelling, calls and a battery, and you want the bass to come with that package. Skip it if you are chasing maximum low-end output from a big driver, or you specifically want a wired studio tool — the SXFJF is explicitly a cable-free design, and the noise control is sound isolation and active cancelling rather than a studio-monitor approach.
Side-by-Side: Which Should You Choose?
• Best for deep bass from a large driver → Souz Collection Pure BEATZ Professional (50mm speakers, neodymium magnets, Acoustic Bass Booster).
• Best for commuting and noisy environments → SXFJF Headphones Deep Heavy (active noise cancelling plus closed-back isolation pads).
• Best for DJ, live and studio work → Souz Collection Pure BEATZ Professional (specified for DJ, professional and studio use, with a retractable cable).
• Best for calls → SXFJF Headphones Deep Heavy (built-in microphone and media controls).
• Best for travel and packing → SXFJF Headphones Deep Heavy (foldable, lightweight at 240 g, no cable to manage) — though the Souz also folds and has a retractable cable, so it is not a bad second.
• Best for long listening sessions → a tie on paper: the Souz uses leather cushions to reduce fatigue, while the SXFJF specifies ultra-soft ergonomic ear cups for long wear.
• Best for plug-and-play with any device → Souz Collection Pure BEATZ Professional (gold-plated 3.5mm jack, no pairing or charging required).
In my opinion, the right pick comes down to one question: do you want a wired bass specialist or a wireless all-rounder? If deep, driver-driven low end is the whole point — DJ sets, studio work, or bass-heavy listening at a desk — I would buy the Souz Collection Pure BEATZ Professional. The 50mm speakers, neodymium magnets and Acoustic Bass Booster are a more convincing recipe for real bass than a tuning mode, and the 32 ohm impedance means it will run off almost anything. If you need Bluetooth, noise cancelling, calls and a rechargeable battery in one foldable package, I would buy the SXFJF Headphones Deep Heavy instead — just go in knowing its bass comes from a sealed fit and a bass function, not a large driver.
how to pair sony extra bass headphones
The pairing steps are the same idea across most Bluetooth headphones, including the SXFJF here: power the headset on, put it into pairing mode so it broadcasts, then open your phone or laptop's Bluetooth menu, select the headphone from the list and confirm. Sony's own models use their own button combinations, so check that brand's manual for the exact sequence. The SXFJF is a straightforward Bluetooth over-ear, so once it is in pairing mode the connection is handled from your device.
how to connect sony extra bass headphones
For a wired connection you simply plug the cable into your device's 3.5mm jack — which is exactly how the Souz Collection Pure BEATZ Professional works, via its gold-plated 3.5mm plug and retractable cable, with no pairing or charging needed. Sony's extra bass models may support both wired and wireless depending on the version. Either way, 32 ohm impedance like both headphones here means a phone or laptop can drive them directly without extra gear.
how to connect jvc deep bass wireless headphones
Wireless deep-bass headphones generally connect the same way: charge them, switch them on, enable pairing, then pick them in your device's Bluetooth settings. The SXFJF Deep Heavy follows that pattern and adds media controls on the headset plus a microphone for calls. If a connection drops, turning Bluetooth off and on again and re-selecting the headphone usually fixes it.
what is deep bass in headphones
Deep bass is the low-frequency part of the range — roughly the bottom of the 20–20000 Hz window both of these headphones cover — where you feel kick drums, sub-bass and low synth notes rather than just hearing them. Large drivers move more air and tend to produce deeper, more physical bass, which is the Souz's approach with its 50mm speakers. Sealed ear cups and noise isolation, as on the SXFJF, make bass feel stronger by keeping outside noise out.
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