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If you want to add a boom mic with inline volume and mute to the Bose QC45 headphones you already own, choose Koffmon QC45; if you need a complete single-ear headset with a mic that plugs into almost anything, choose Crotrain One Ear Headset.
• Koffmon QC45 — biggest strength: it turns a pair of Bose QC45 headphones into a gaming/chat headset with a boom mic plus inline volume and mute, over a plain 3.5mm AUX connection that needs no drivers. Biggest trade-off: it is a cable only — if you don't already own Bose QC45 headphones, this product does nothing for you.
• Crotrain One Ear Headset — biggest strength: a complete wired single-ear headset with a mic, a 50mm dynamic driver, and a 3-in-1 connection kit (3.5mm, Type-C and a Type-C-to-USB adapter) that covers consoles, PC, Mac, tablets and phones. Biggest trade-off: the earcup and mic boom are left-ear only, and Crotrain itself notes it doesn't work with older Xbox One versions.
• Koffmon QC45 is for you if you already own Bose QC45 headphones and mostly want a cleaner voice and instant mute/volume control while gaming or on calls.
• Crotrain One Ear Headset is for you if you want one self-contained headset for work calls, team meetings and console gaming, and you value the flexibility of USB, Type-C and 3.5mm in one box.
• In short: Koffmon upgrades gear you own; Crotrain is the gear.
The Koffmon QC45 is not a headset. It's a replacement boom mic cable with volume control and a mute switch, built specifically for Bose QC45 headphones and terminated in a 3.5mm auxiliary connection. That single design decision defines everything about it. You plug it into your QC45s, the inline module gives you instant volume adjustment and muting without touching your console or PC, and the adjustable boom arm lets you position the mic for voice pickup. No drivers, no software, no setup ritual — it's a plug-in-and-talk accessory.
The pitch is clear for a specific buyer: someone who already likes their Bose QC45 for music and general listening and wants to keep using them for gaming, calls and online meetings instead of buying a second headset. In that scenario, the Koffmon cable consolidates your gear. The inline mute is the standout feature for me — being able to kill your mic mid-match or mid-meeting without digging through menus is the kind of small thing you notice every single session. The PVC-jacketed, tangle-free cable and male-to-male AUX connectors keep the physical side simple, and the listed 12-month warranty is a reasonable safety net for a part that takes daily abuse.
Who should skip it? Anyone who doesn't own Bose QC45 headphones. Compatibility here is narrow by design, and the 3.5mm plug means you'll also want a device with a 3.5mm audio input — PC, laptop, PS4, PS5, Xbox One controller and similar. If your setup is USB-C-only or you want a headset out of the box rather than a cable, this isn't your product. And if your priority is a full listening solution rather than a mic upgrade, keep reading.
The Crotrain One Ear Headset is the opposite kind of purchase: a complete wired single-ear headset that arrives ready to use. The core of it is a 50mm dynamic driver — a genuinely large driver for a single-ear design — paired with a flexible mic boom and push-button volume control. Around that, Crotrain bundles a 3-in-1 connection kit: the headset's own 3.5mm jack, a 3.5mm-to-Type-C cable, and a Type-C-to-USB adapter. That's the real story here. One box, and you can connect to PS5, PS4, Xbox One and Xbox Series X/S, Nintendo Switch (including Switch 2), PC, laptops, tablets, iPad, and iOS and Android phones.
The open-earmuff design is worth understanding before you buy. Because the earcup sits open, you hear both your game or call audio and the room around you. For office work, team meetings and chat, that's a feature — you stay aware of your surroundings and you can hear your own voice naturally. For immersive single-player gaming, it's a trade-off, since you're not getting isolation. The comfort story is solid on paper: soft protein memory foam ear pads and an adjustable headband, with the outer shell in ABS and leather-look material. Crotrain also describes the cable as braided and tangle-resistant, which matters for something that lives in a bag.
Two limitations are stated plainly and you should take them seriously. First, the earcup and mic boom are left-ear only — the side without the mic and earmuff goes above the right ear. If you strongly prefer wearing a headset on your right ear, this design won't accommodate you. Second, Crotrain explicitly says it is not compatible with older versions of Xbox One, so check your exact console generation. Apart from that, the 3-in-1 adapter approach makes this one of the more flexible wired options for someone who moves between a work laptop, a phone and a console.
• Best for people who already own Bose QC45 headphones → Koffmon QC45. It exists purely to upgrade them for voice chat.
• Best for a complete, ready-to-use headset → Crotrain One Ear Headset. Mic, driver, cable and adapters all included.
• Best for instant mute and volume control → Koffmon QC45. The inline module is the whole point of the cable.
• Best for device flexibility → Crotrain One Ear Headset. 3.5mm, Type-C and USB coverage across consoles, computers, tablets and phones.
• Best for open-ear awareness (office, meetings, chat) → Crotrain One Ear Headset. The open earmuff design keeps you tuned into your surroundings.
• Best for keeping background noise out of your own listening → neither, strictly speaking. The Koffmon is a mic cable and the Crotrain lists no noise control — both are about voice and awareness, not isolation.
• Best for left-ear wearers → Crotrain One Ear Headset. Just remember the mic side is fixed to the left ear.
• Best for a simple, driver-free plug-in → both. Koffmon runs on plain 3.5mm AUX; Crotrain is wired with push-button controls.
In my opinion, the right pick comes down to what you already own. If you have Bose QC45 headphones sitting on your desk, I'd buy the Koffmon QC45 — it's the cheaper-feeling decision in spirit, because it upgrades something you already like instead of replacing it, and the inline mute and volume are genuinely useful every session. If you don't own QC45s, I'd buy the Crotrain One Ear Headset instead: it's a complete, self-contained solution with a 50mm driver and a connection kit that will follow you from console to laptop to phone. One caveat I'd weigh seriously: the Crotrain's left-ear-only fit and its stated incompatibility with older Xbox One models. Check the current price on Amazon for both before you commit, since a cable and a full headset rarely sit in the same budget bracket.
It's a replacement boom mic cable with inline volume and mute, not a headset. It's designed for Bose QC45 headphones and connects via 3.5mm AUX to PC, laptop, PS4, PS5, Xbox One controller and similar devices.
Does the Crotrain One Ear Headset work with PS5, Xbox and Switch?
No. The earcup and microphone side is left-ear only; the side without the mic and earmuff goes above the right ear. If you need right-ear wear, this isn't the right fit.
For meetings specifically, the Crotrain One Ear Headset fits better — it's a complete headset with a flexible mic boom and an open earmuff design that keeps you aware of your surroundings. The Koffmon only makes sense for meetings if you already own Bose QC45 headphones and want to add a mic to them.
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