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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 7 min read · Independent comparison
• keephifi KZ EDX Pro — biggest strength: a real pair of dual-purpose in-ear monitors built around a 10mm composite magnetic dynamic driver, with a 10Hz–20KHz range, 112dB sensitivity and a replaceable 2-pin cable.
• keephifi KZ EDX Pro — biggest trade-off: 24 ohm impedance is low, not high, so this is an easy-to-drive everyday IEM rather than a specialist high-impedance studio load, and the packaging now ships with a single set of ear tips.
• NewTH Replacement Game Microphone — biggest strength: a purpose-built 2.5mm boom mic for the Turtle Beach Recon 500, plug-and-play with no drivers or batteries, a 6.5-inch cable and a bendable 360-degree boom.
• NewTH Replacement Game Microphone — biggest trade-off: it only works with the Recon 500. Buy it for any other headset and it is simply the wrong part.
• Who each is for: the KZ EDX Pro suits listeners, mobile gamers and musicians who want one wired earphone for music and play; the NewTH mic suits Recon 500 owners whose original boom has broken or gone missing.
The EDX Pro is a wired in-ear monitor, not a headset accessory. Its core is a single 10mm composite magnetic dynamic driver with a published frequency range of 10Hz to 20KHz, 112dB sensitivity and 24 ohm impedance. That combination of high sensitivity and low impedance is the practical part: it means the earphone is designed to be driven by ordinary sources — a phone, a laptop, a handheld console, a basic player — without demanding a separate amplifier to reach a usable volume. The tuning is described as popular and ACG oriented, with a low-frequency density that suits electronic music and heavy instrumental material, and a transient response quick enough to keep vocals and classical detail intact. In my reading of the specs, this is a deliberately broad, crowd-pleasing voicing rather than a flat reference curve.
Build and ownership is where it separates itself from throwaway earbuds. The shell is a skin-friendly imported resin cavity with a metal ornament, moulded at high temperature and finished with UV varnish, and it comes in Classic Black, Cyan or White. That resin-and-metal construction, plus the ear-hook shape, is what makes it plausible as a stage or gaming earphone rather than a commute-only pair. The cable is a 5N OFC anaerobic copper flat cable with a 0.75mm standard gold-plated 2-pin connector, and it is replaceable — so if the cable eventually fails, you swap the cable instead of the earphone. That is a genuinely different ownership proposition from a sealed, glued-shut earbud.
NewTH Replacement Game Microphone: Who It's For
This is a single-purpose spare part, and it is worth being blunt about that. The NewTH Replacement Game Microphone is compatible only with the Turtle Beach Recon 500 Stereo Studio Gaming Headset. If that is your headset and the original boom mic has broken, gone missing, or started cutting out, this is the exact replacement you are looking for. If it is not your headset, nothing else on this page matters — check your headset model before ordering.
Where it earns its place is in the details of the fit. It uses a 2.5mm gold-dipped, copper-covered jack and a 6.5-inch cable, which the spec sheet frames as the right length to reach your mouth without a dangling loop of excess wire. There are no drivers to install and no batteries involved in operation — it is plug and play. The boom bends through 360 degrees and holds its position, which matters more than it sounds: you set the mic where your mouth actually is and it stays there through a long session instead of slowly drooping.
Inside, it uses an electret condenser cartridge with high sensitivity, low impedance (45 ohm) and anti-noise, anti-jamming capability, plus a 60dB signal-to-noise ratio and a unidirectional polar pattern. The unidirectional pattern is the practically useful part — it favours the voice in front of it and rejects more of the room around it. It ships with a dust-resistant foam cover plus an extra foam pop filter piece, and the ABS, plastic and silicone body is rated at 6.3 x 0.39 x 0.39 inches. The listed compatible devices span PS4, PS5, Xbox One, Xbox One S, Xbox One X, Series X, PC and phones — but always subject to that 2.5mm Recon 500 condition.
Buy it if you own a Recon 500 and want your voice back without replacing the whole headset. Skip it if you need a microphone for anything else, or if you want a headset with its own integrated mic rather than a modular boom.
• Best for listening to music and gaming on the same wired earphone → keephifi KZ EDX Pro. One product, two jobs.
• Best for fixing a broken boom on a Turtle Beach Recon 500 → NewTH Replacement Game Microphone. Nothing else here solves that.
• Best for upgradeability → keephifi KZ EDX Pro. The 0.75mm 2-pin connector means the cable is a replaceable, upgradeable part.
• Best for voice capture with clear chat → NewTH Replacement Game Microphone. Unidirectional electret condenser, 60dB signal-to-noise ratio, foam-covered.
• Best for fitting an existing setup with zero configuration → NewTH Replacement Game Microphone. Plug and play, no drivers, no batteries.
• Best for a low-impedance, easy-to-drive load → keephifi KZ EDX Pro at 24 ohm and 112dB sensitivity.
• Best for someone who wants a high-impedance studio headphone → neither. The EDX Pro is 24 ohm and the NewTH mic is 45 ohm; if high impedance is your requirement, look at dedicated studio headphones instead.
• Best all-round value for a single purchase → keephifi KZ EDX Pro, in my opinion, because it is a complete product rather than a spare part.
If I were spending my own money, I would buy the keephifi KZ EDX Pro. It is a whole earphone — driver, resin shell, replaceable cable, three colour options, one-year warranty — that covers music, mobile gaming and casual monitoring in one purchase. The NewTH mic is excellent at exactly one thing, but it is a repair part: it only makes sense if you already own a Turtle Beach Recon 500 and only need your voice back. Buy the KZ EDX Pro unless the Recon 500 boom is the specific problem you are solving.
do high impedance headphones sound better
Not automatically. Impedance is a load characteristic, not a sound-quality rating. What tends to matter more is the driver design, the tuning and how well the headphone matches your source — the KZ EDX Pro, for example, pairs a 10mm dynamic driver with 112dB sensitivity and 24 ohm impedance so ordinary devices can drive it well.
is high impedance good for headphones
It can be, in specific studio and pro-audio setups where the source is designed to deliver voltage into a higher load. For everyday use with phones, laptops and handhelds, lower impedance is usually the more practical choice because it is easier to drive to a usable volume.
Better for some jobs, not better as a blanket rule. High impedance is a design choice aimed at particular amplification chains; low impedance headphones like these are built to work across ordinary consumer devices. Neither number tells you how good the tuning or the driver is.
why are high impedance headphones better
The usual argument is that a higher impedance load draws less current and can behave more predictably with certain amplifiers, which some engineers prefer in a studio chain. It is not a quality guarantee, and it is not what this pair of products is built around — the EDX Pro at 24 ohm and the NewTH mic at 45 ohm are both low-impedance designs.
Which one should I buy?
Buy the keephifi KZ EDX Pro if you want a complete wired in-ear for music and gaming. Buy the NewTH Replacement Game Microphone only if you own a Turtle Beach Recon 500 and need to replace its boom mic. Whichever you pick, check the current price on Amazon before you commit.
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