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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 7 min read · Independent comparison
• AKG Pro Audio 2458X00190 — biggest strength: A genuinely open, reference-tuned design with AKG's Varimotion two-layer diaphragm and flat-wire voice coil, paired with a detachable 3 m cable and replaceable 3D-foam earpads.
• AKG Pro Audio 2458X00190 — biggest trade-off: It's a wired, open-back headphone with no bundled mixing software and no noise isolation, so it's strictly a quiet-room tool.
• Sennheiser HD-490 — biggest strength: Two sets of ear pads (producing and mixing) plus the Dear Reality dearVR MIX-SE plugin, a rigid case, a stand, and a USB-C adapter with a built-in DAC.
• Sennheiser HD-490 — biggest trade-off: Higher 130-ohm impedance means it wants a decent amp to sound its best, and the bundle adds bulk and accessories you may not need.
• Who each pick is for: The AKG K702 suits a purist who wants one honest reference headphone and a long cable. The HD-490 PRO Plus suits a producer who wants a complete, tune-it-to-the-task monitoring kit out of the box.
The AKG Pro Audio 2458X00190 is the model number behind the K702, and that name carries a specific meaning: reference, open, over-ear studio headphones for precision listening, mixing and mastering. Everything in the design serves that goal. The open enclosure is deliberately unsealed, which is what gives the K702 its spacious, airy presentation — you hear a wide, uncongested image rather than a sound crammed against your eardrums. For mixing, that openness is a feature, not a flaw: it keeps instruments from stacking on top of each other in your perception.
The technical story here is AKG's Varimotion two-layer diaphragm, whose thickness varies across its diameter so the driver can be tuned precisely, plus a flat-wire voice coil that AKG says improves pulse response and treble accuracy. The numbers back up the intent: a 10–39800 Hz frequency bandwidth, 105 dB SPL/V sensitivity, 62 ohms rated impedance and 200 mW maximum input power. Low impedance and high sensitivity mean this is an easy load — it will reach usable volume from far more modest gear than many studio headphones, which matters if you mix straight from an interface or laptop output.
Buy it if you want one reference headphone you can trust for long sessions. The over-ear fit, specially shaped 3D-foam pads and genuine-leather headband are built for hours, the cable detaches at a mini-XLR connector for quick replacement, and the pads are replaceable. Each unit is individually checked and serial-numbered. Skip it if you need isolation, wireless use, or a kit that includes software and accessories — the K702 gives you the headphone, a 3 m cable and nothing else. And note the warranty terms: AKG's limited product warranty applies only when you buy from an authorized North American dealer, so where you buy matters.
The Sennheiser HD-490 PRO Plus is aimed at a slightly different person: the working producer, engineer or content creator who wants a monitoring system, not just a headphone. Sennheiser describes it as an open-back design with an extremely wide, dimensional sound stage and ultra-precise localization, plus an uncolored frequency response meant to reproduce the full spectrum honestly. That's the same fundamental philosophy as the AKG — open back, no coloration — but the package around it is very different.
The standout feature is the two sets of ear pads. One set is voiced for producing and one for mixing, and swapping them changes how the headphone presents detail, which Sennheiser frames as a way to fight ear fatigue and pinpoint problem frequencies. That's a real workflow tool: use the producing pads when you're creating and the mixing pads when you're balancing. Add the Dear Reality dearVR MIX-SE plugin, which turns your DAW into a virtual mixing environment using spatial audio, and you have a headphone-plus-software monitoring chain in one box.
The bundle is unusually complete. You get a 5.9' cable and a 9.8' cable, an extra headband pad, a rigid case with a cushioned stand, an over-ear headphone stand, a USB-C headphone adapter with a built-in DAC, and a microfiber cleaning cloth. Sennheiser also highlights washable, replaceable pads and FSC-certified packaging. The trade-off is electrical: 130 ohms impedance is roughly double the AKG's, so this headphone benefits noticeably from a proper amp or interface — the included USB-C DAC adapter helps on the go, but a phone headphone jack alone may leave it sounding thin. It's also wired only, with no noise control, like the AKG. Buy it if you want a complete, configurable studio kit with software included. Skip it if you want the simplest possible reference headphone and don't care about pads, plugins or accessories.
Side-by-Side: Which Should You Choose?
• Best for a purist reference setup → AKG Pro Audio 2458X00190. One headphone, one tuning, no extras to manage.
• Best for a complete studio kit → Sennheiser HD-490. Two pad sets, two cables, a case, a stand, a DAC adapter and mixing software all included.
• Best for amp owners who want headroom → Sennheiser HD-490. At 130 ohms it rewards a real headphone amp.
• Best for tuning the headphone to the task → Sennheiser HD-490. Producing pads and mixing pads in the same box.
• Best for spatial-audio mixing workflows → Sennheiser HD-490. The dearVR MIX-SE plugin is part of the package.
• Best for cable longevity and easy repair → AKG Pro Audio 2458X00190. Detachable mini-XLR cable and replaceable 3D-foam pads.
• Best for travel and storage → Sennheiser HD-490. The rigid case and cushioned stand make it far easier to transport.
• Best for extended wear in one position → either, with a lean to AKG. Over-ear pads and a leather headband on the K702; Sennheiser counters with an extra headband pad.
In my opinion, the Sennheiser HD-490 PRO Plus is the better buy for most people shopping in this pair, because it solves more problems in one purchase: two voicings, a plugin, a case, a stand and a USB-C DAC adapter. It's a studio in a box, and the dual pads genuinely change how you work. That said, I'd pick the AKG Pro Audio 2458X00190 if I wanted a single, honest, easy-to-drive reference headphone and nothing else — its 62-ohm load and detachable cable make it the simpler long-term companion. Decide whether you want a system or a tool, and the choice is obvious. Either way, check the current price on Amazon before you commit.
how to connect studio headphones
Both of these are wired headphones with a 3.5 mm jack. The AKG K702 ships with a 3 m detachable cable using a mini-XLR connector at the earcup, so you plug the 3.5 mm end into your interface, mixer or laptop. The Sennheiser HD-490 includes a 5.9' and a 9.8' cable plus a USB-C adapter with a built-in DAC, so you can run it from a USB-C port if your device lacks a headphone jack. Neither has wireless connectivity despite any Bluetooth mention in listing metadata — treat both as wired.
how to test studio headphones
Play a familiar, well-recorded track and listen for balance across the spectrum, since both are designed for uncolored, honest reproduction. Check channel matching by panning a mono signal hard left and right. On the Sennheiser you can also swap between the producing and mixing ear pads and compare how each presents detail. On the AKG, listen for the open, spacious image its unsealed design is built to deliver.
how to bluetooth studio headphones
You can't natively — the AKG Pro Audio 2458X00190 and the Sennheiser HD-490 are both wired designs with no wireless technology in their connectivity specs. To go wireless you'd need a separate Bluetooth transmitter or receiver that accepts a 3.5 mm connection. Be aware that Bluetooth adds latency and compression, which is why both of these are built as wired monitoring tools for mixing and mastering.
how to pair beats studio headphones
That's a different brand entirely — Beats headphones use their own pairing process and app, and it has nothing to do with either the AKG K702 or the Sennheiser HD-490. If you arrived here looking for Beats instructions, this comparison won't help; both products on this page are wired studio headphones with no pairing mode. For Beats, follow the pairing steps in that brand's own documentation.
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