If you want a low-latency wireless monitoring system for webinars, choose iCON Airmon Pro; if you need closed-back, wired over-ear headphones with isolation, choose Superlux HD667. The clearest difference is how they connect and sit: Airmon Pro uses a 2.4GHz transmitter and in-ear monitors, while the HD667 uses a cable and covers the ears.
For webinar hosts who want freedom from a headphone cable, I’d lean toward iCON. For listeners who want a wired setup, an inline volume control, and a closed-back design, the Superlux makes more sense.
• iCON Airmon Pro’s strength: 2.4GHz wireless monitoring with under-2ms latency and 96kHz/24-bit stereo audio. Trade-off: It needs charging, and its in-ear fit may not suit someone who prefers over-ear headphones.
• Superlux HD667’s strength: A closed-back over-ear design, detachable 2m cable, and inline volume control. Trade-off: It is wired, so the cable connects you to your audio source.
• For webinar hosts who move around while monitoring: Airmon Pro’s wireless transmitter-and-receiver setup is the more flexible fit.
• For a seated listener who prefers over-ear coverage and a physical volume control: The HD667 offers a straightforward wired arrangement.
• Choose Airmon Pro if wireless monitoring and multiple receiver support matter most; choose HD667 if isolation, cable-based compatibility, and foldability matter more.
The iCON Airmon Pro is a wireless in-ear monitor system made up of a transmitter and receiver. It connects over 2.4GHz and is specified for latency under 2ms, a useful distinction for someone monitoring speech while speaking. That low-latency design is the main reason I’d consider it for webinars: when your voice and the monitoring signal are closely timed, the setup is intended for real-time listening rather than delayed playback.
Its stated audio format is 96kHz/24-bit lossless stereo. That’s a high-resolution specification, though it does not by itself tell you how the system will sound in every room or with every source. The in-ear placement and passive noise cancellation are also relevant: the earbuds sit in the ears rather than over them, and the design offers passive rather than active noise control. A battery-powered receiver and USB-C charging make the system portable, but they also mean charging belongs in your setup routine.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-23 · 7 min read · Independent comparison
Airmon Pro can support unlimited receivers from one transmitter, which may be useful for a webinar with more than one person monitoring the same feed. It could suit a presenter, producer, or small team that wants a wireless monitoring arrangement. Skip it if you prefer an over-ear fit, need a wired headphone connection, or don’t want to manage rechargeable equipment.
The Superlux HD667 is a wired, closed-back, over-ear headphone designed with drummers and instrument monitoring in mind. Its 40mm dynamic drivers have a stated frequency range of 20Hz to 20,000Hz and sensitivity of 102dB. Those figures describe the driver and its specified range; they are not a guarantee of how every recording, voice, or room will sound. For webinar use, the more immediately practical features are the over-ear placement and closed-back construction, which are designed to help isolate the listener from outside sound.
The HD667 includes a 2m detachable cable with inline volume control. That gives you a physical way to adjust listening level without reaching for the connected device, although the cable does limit how far you can move from it. A stereo mini plug and a 3.5mm-to-6.3mm adapter make the wired connection suitable for the listed types of equipment, including electronic drum kits, keyboards, bass, guitar amps, and other studio gear. It weighs 335g without the cable, folds, and comes with a protective pouch.
For someone seated at a desk, the cable and inline control can make the listening setup simple and direct. The closed-back over-ear shape may also appeal if you want more coverage around your ears than in-ear monitors provide. Skip it if you need wireless freedom, want a compact in-ear system, or will be bothered by a cable during a presentation.
• Best for wireless webinar monitoring → iCON Airmon Pro. Its 2.4GHz connection and under-2ms latency are designed for real-time monitoring without a headphone cable running to the source.
• Best for closed-back over-ear coverage → Superlux HD667. It is explicitly an over-ear, closed-back design, whereas Airmon Pro uses in-ear monitors.
• Best for adding listeners to one transmitter → iCON Airmon Pro. Its specifications say it supports unlimited receivers from a single transmitter, a notable fit for a host and monitoring team.
• Best for wired equipment connections → Superlux HD667. It includes a detachable 2m cable, a stereo mini plug, and a 3.5mm-to-6.3mm adapter.
• Best for adjusting volume on the cable → Superlux HD667. Its inline control lets you make quick level changes without handling the connected device.
• Best for rechargeable portability → iCON Airmon Pro. The system is battery-powered and charges by USB-C, though you’ll need to keep it charged.
• Best for folding away after use → Superlux HD667. Its foldable design and included pouch help with storing and carrying the headphones.
• Best for someone considering bone conduction headphones for webinars or open ear earbuds for webinars → neither is described as either type. Airmon Pro is an in-ear monitor system, and the HD667 is a closed-back over-ear headphone.
My Verdict
For webinars, I’d buy the iCON Airmon Pro if I wanted to move around while monitoring and valued the stated under-2ms latency. The wireless format and support for multiple receivers give it a practical edge for that particular setup.
Before choosing, think about how you’ll connect your monitoring gear. Airmon Pro uses a 2.4GHz transmitter and receiver, while the HD667 uses a wired connection with a stereo mini plug and an included 3.5mm-to-6.3mm adapter. Check that the system you choose matches the audio output available in your webinar setup; the product details do not specify every possible connection or device pairing.
Fit is another practical divider. Airmon Pro places its monitors in the ears, while the HD667 covers the ears. Neither design is universally more comfortable: it comes down to which style you prefer for a longer session. The Superlux weighs 335g without its cable, while the iCON’s listed features emphasize a compact, battery-powered system rather than providing a weight figure.
Also consider your movement and routine. The wireless iCON avoids a cable between the receiver and transmitter, but it needs charging. The wired Superlux does not rely on a rechargeable receiver, but its 2m cable keeps you physically connected to the source. If more than one person needs the same monitoring feed, Airmon Pro’s multiple-receiver support may matter; for one listener who wants a cable-mounted volume control, the HD667 has the more explicit convenience feature.
If you are comparing these options with over ear headphones for webinars, the HD667 is the one that matches that form factor. If you are searching for the best bone conduction headphones for webinars or open ear earbuds for webinars, neither product fits those descriptions based on its stated design. For the latest price on Amazon, check the page’s price button.
For a webinar host who wants wireless monitoring, Airmon Pro is the more suitable match on paper: it uses 2.4GHz wireless and specifies latency under 2ms. The HD667 is a wired, closed-back over-ear option with an inline volume control.
Does the Superlux HD667 work without a cable?
No. The HD667 is a wired headphone and comes with a 2m detachable cable. The cable has an inline volume control, and the package includes a 3.5mm-to-6.3mm adapter for compatible connections.
No. Airmon Pro is an in-ear monitor system, while the Superlux HD667 is a closed-back over-ear headphone. If you specifically want bone conduction or open-ear headphones, these two products do not match those stated designs.
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