How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 6 min read · Independent comparison
• Sennheiser EPOS GSP 300 — biggest strength: A closed-back wired headset with 15–26,000 Hz dynamic drivers, a lift-to-mute noise-cancelling boom mic, and a volume wheel on the right ear cup. Everything you need is in the box.
• Sennheiser EPOS GSP 300 — biggest trade-off: It's a wired 3.5 mm headset only. There's no Bluetooth, no USB-C, and no microphone flexibility — you use the one it comes with.
• Tobysome QC35 — biggest strength: It converts Bose QC35 and QC35 II headphones into a headset with a flexible, detachable boom mic, an inline mute switch, and a USB-C connection for phones, tablets and laptops.
• Tobysome QC35 — biggest trade-off: It is a cable, not a headset. It does nothing on its own — you must already own QC35 or QC35 II headphones for it to work.
• Pick the GSP 300 if you want one purchase that covers PC, Mac, Xbox One, PS4, Switch and smartphone gaming out of the box.
• Pick the Tobysome QC35 if you love your Bose QC35 headphones and just want to add a microphone for gaming, calls or podcasting.
The GSP 300 is built as a complete gaming headset, and that's the whole point. The closed acoustic design is meant to deliver deep bass for explosions alongside enough clarity to hear voice chat and audio cues. The dynamic drivers cover a 15–26,000 Hz range, which is a wide spread for a headset at this tier, and the 28-ohm impedance means it doesn't need a dedicated amp to get loud on a controller or a phone.
Comfort is where the GSP 300 makes its case for long sessions. The ear pads use memory foam, and the headband adjusts to different head sizes and shapes. The ear cups are over-ear, which helps with passive noise attenuation — useful when you're gaming in a shared room. On top of that, the specs list active noise cancellation, so the GSP 300 is doing more on the isolation front than a typical open gaming headset.
Buy it if you want a single wired headset that works across PC, Mac, Xbox One, PS4, Switch and smartphone, with comfort and a serious mic baked in. Skip it if you already own premium Bose headphones you love, or if you need wireless freedom — this one is a 3.5 mm wired headset, full stop.
Tobysome QC35: Who It's For
The Tobysome QC35 is a different animal entirely, and it's important to be clear about that: this is a boom microphone cable, not a headset. What it does is upgrade headphones you already own. The 2.5 mm jack is made specifically for Bose QuietComfort 35 and QuietComfort 35 II, and the other end is USB-C, which covers iPhone 17, iPhone Air, 16, 15, iPad, Samsung and Android smartphones, laptops and other USB-C devices.
The design is thoughtful for what it is. The boom mic has a flexible gooseneck with roughly 120° of adjustment, so you can position it for good voice pickup, and it's detachable — pull it off when you just want to listen to music without a mic hanging in front of your face. There's an inline mute switch you slide up or down, so you can cut your voice without pausing the game.
Audio quality comes down to the cable's construction. The inner wire is oxygen-free copper, the cover is TPE, and the 2.5 mm plug is gold-plated for a secure connection. The microphone itself is a unidirectional cardioid design with noise-cancelling claimed, aimed at reducing background noise so teammates, colleagues or a podcast audience hear your voice rather than your room. The cable is 3.9 ft / 1.2 m long, which is short enough for a phone in your hand but tight if your PC tower sits under a desk.
Buy it if you own QC35 or QC35 II headphones and want to add a proper boom mic for gaming, Skype, VoIP, podcasting or calls. Skip it if you don't own those specific Bose headphones — the 2.5 mm jack won't fit anything else — or if you want an all-in-one solution rather than a cable upgrade.
Side-by-Side: Which Should You Choose?
• Best all-in-one gaming solution → Sennheiser EPOS GSP 300. Headset, mic, volume control and cable all included.
• Best if you already own Bose QC35 / QC35 II → Tobysome QC35. It turns headphones you've already invested in into a working headset.
• Best for mobile and tablet use → Tobysome QC35. USB-C plugs straight into iPhone 17, iPhone 16, iPhone 15, iPad, Samsung and Android devices.
• Best for flexible mic positioning → Tobysome QC35. The detachable gooseneck adjusts about 120°; the GSP 300's boom only lifts and lowers.
• Best for on-headset volume control → Sennheiser EPOS GSP 300. The ear-cup volume wheel is right under your thumb; the Tobysome cable only gives you a mute switch.
• Best for passive isolation and long-session comfort → Sennheiser EPOS GSP 300. Memory foam ear pads and an adjustable headband are built for hours of play.
• Best for travel and casual listening without a mic → Tobysome QC35. Detach the boom and your QC35s go back to being headphones.
In my opinion, the Sennheiser EPOS GSP 300 is the safer buy for most people, because it's a finished product — you plug it in and you're gaming, with a noise-cancelling lift-to-mute mic, memory foam comfort and multiplatform support in one package. The Tobysome QC35 only makes sense if you already own Bose QC35 or QC35 II headphones and specifically want to add a boom mic and USB-C connectivity without buying a new headset. If that's your situation, it's a clever, low-effort upgrade. If it isn't, it's a cable with nothing to plug into. I'd buy the GSP 300 unless the QC35 I already own is the whole reason I'm shopping.
FAQ
No. It's a wired headset with a 3.5 mm jack. There's no Bluetooth or USB-C connection listed, so plan on plugging it into a controller, phone or PC.
Both use noise-cancelling mic designs — the GSP 300 has a lift-to-mute boom, while the Tobysome uses a detachable cardioid boom with an inline mute switch. If you want everything self-contained, go GSP 300; if you want mic flexibility on existing Bose headphones, go Tobysome.
I can't quote prices here, and they change often. Since one is a full headset and the other is a single cable, they aren't really competing on the same budget — check the current price on Amazon for each before deciding.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: SGNICS Motorola Edge vs PWTEK Earbuds, HUBFINDER USB C Hub vs Arzweyk Replacement USB C, MEPUSON Earbuds vs Bewinner Earbuds LED, Altec Lansing Kid Safe 2-in-1 vs iClever BTH26