EPOS Impact SC 635 USB Mono Headset with 3.5mm – Teams Certified
The EPOS Impact SC 635 works two places
A contact center agent's calls don't always come from the same device — some route through the desk PC, others land on a mobile phone or tablet when they're away from their station. The EPOS Impact SC 635 is built around that exact split: a mono USB headset that also connects to a phone or tablet over 3.5mm, so the same headset covers both without owning two.
It's a single-sided, on-ear headset with an ultra noise-canceling microphone, EPOS Voice HD audio, CircleFlex dual-hinge ear cups, and ActiveGard protection against sudden sound spikes. It's Microsoft Teams and Skype for Business certified, UC optimized for platforms like Cisco, Avaya, and IBM, and carries a 3-year warranty — part of EPOS's premium IMPACT 600 "Century" line, and specifically the mobile-connectivity sibling to the desk-only SC 630 I've written about before.
Is the EPOS Impact SC 635 active noise cancellation?
No — the noise cancellation on the EPOS Impact SC 635 is on the microphone, not the ear cup. It's an ultra noise-canceling mic, meaning it filters background sound out of your outgoing voice before it reaches the caller. One retailer's listing for this exact model describes it as "active noise cancellation," but that conflicts with EPOS's own product documentation and every other listing for this headset, which consistently call out the microphone specifically. Treat that phrase as a copy error, not a feature.
One cable to the desk, one jack to the phone
The EPOS Impact SC 635 connects to a computer over USB for softphone calls, and separately to a mobile phone or tablet over its built-in 3.5mm jack — the same dual-connectivity design as its stereo sibling, the EPOS Impact SC 665. If your role means fielding calls from both a desk system and a mobile device, this is the headset built to follow you between them rather than staying tethered to one.
CircleFlex keeps the fit precise
The CircleFlex dual-hinge ear cup pivots to sit flush against your ear regardless of head shape, paired with a padded headband and a large leatherette cushion built for hours of continuous wear rather than the occasional call.
How much does the EPOS Impact SC 635 weigh?
The EPOS Impact SC 635 weighs about 2 ounces (roughly 57 grams) — noticeably lighter than the fixed-desk SC 630, which runs closer to 5 ounces thanks to its steel-and-aluminum build. The SC 635 trades some of that heavier construction for a lighter, more travel-friendly design, which fits its role as the mobile member of the lineup.
USB and 3.5mm connectivity, about 2 oz. For anyone splitting calls between a computer and a mobile device.
USB only, about 5 oz, steel-and-aluminum build. For a fixed desk setup with no mobile connectivity needed.
Built for the contact center, priced like it
Mobility without giving up durability
EPOS positions the IMPACT 600 series specifically for contact center agents who need "outstanding sound performance, durability, and added mobility" — a combination that's hard to find in one headset. The Century line's 3-year warranty, longer than the standard 2-year EPOS offers on entry-level models, reflects that same confidence in the build holding up under daily contact center use rather than occasional office calls.The EPOS Impact SC 635 is the headset for someone whose calls don't stay in one place — an ultra noise-canceling mic that keeps a busy contact center floor out of the caller's ear, a 3.5mm jack that turns the same headset into a mobile-ready device, and a 3-year warranty that backs it up longer than most headsets in this price range. Plug into whichever device the next call comes through, and it's ready either way.
- EPOS Impact SC 635 single-sided headset with in-line control unit
- Leatherette ear cushion (fitted)
- Quick start guide
| Type | Monaural (single-ear), on-ear, over-the-head |
|---|---|
| Series | EPOS IMPACT 600 Series ("Century Mobile") |
| Microphone | Ultra noise-canceling microphone, EPOS Voice HD audio |
| Noise handling | Microphone-side noise cancellation only; passive isolation from ear cushion (not active noise cancellation) |
| Connector | USB-A for PC/softphone; built-in 3.5mm jack for mobile phones and tablets |
| Controls | In-line answer/end, mute, volume |
| Certification | Microsoft Teams and Skype for Business certified; UC optimized for Cisco, Avaya, IBM, and other major platforms |
| Ear cups | CircleFlex dual-hinge; large leatherette cushion |
| Hearing protection | ActiveGard technology — protects against acoustic shock and sudden sound spikes |
| Weight | Approx. 2 oz (57 g) |
| Related models | EPOS Impact SC 630 (desk-only, USB only, heavier steel build); EPOS Impact SC 665 (stereo version of this same mobile design); EPOS Impact SC 635 USB-C (same headset, USB-C connector, part 1000669) |
| Part number | 1000643 |
| Warranty | 3-year manufacturer warranty, plus HeadsetPlus lifetime technical support |
Software. The EPOS Impact SC 635 is certified for Microsoft Teams and Skype for Business, and UC optimized for other major platforms including Cisco, Avaya, and IBM. No drivers are required over USB.
Hardware. The headset connects via USB-A to a computer for softphone use, and separately via its built-in 3.5mm jack to a mobile phone or tablet — two connection paths on one headset, not a single cable serving both.
Platforms. The EPOS Impact SC 635 is built for contact center agents and hybrid professionals who need reliable audio quality across both a desk-based softphone and a mobile device during the same shift.
FAQ
Frequently Asked Questions
The EPOS Impact SC 635 uses microphone-side noise cancellation, not active noise cancellation. Its ultra noise-canceling mic filters background sound out of your outgoing voice; the ear cushion provides only passive isolation from its physical seal, not electronic ANC.
The EPOS Impact SC 635 adds a 3.5mm jack for mobile phones and tablets alongside its USB connection, and weighs about 2 oz. The EPOS Impact SC 630 is USB-only, built from steel and aluminum, and weighs about 5 oz. The SC 635 is the mobile-focused option; the SC 630 is built for a fixed desk.
Yes. The EPOS Impact SC 635 has a built-in 3.5mm jack that connects directly to phones and tablets, separate from its USB connection to a computer — the same headset covers both without switching devices.
The EPOS Impact SC 635 weighs approximately 2 ounces (57 grams), lighter than the desk-only EPOS Impact SC 630, which runs closer to 5 ounces due to its heavier steel-and-aluminum build.
Yes. The EPOS Impact SC 635 is certified for both Microsoft Teams and Skype for Business, and is UC optimized for other major platforms including Cisco, Avaya, and IBM.
The EPOS Impact SC 635 carries a 3-year manufacturer warranty, longer than the 2-year warranty typical of EPOS's entry-level headsets, reflecting the durability built into the Century line for contact center use.