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Updated: 2026-09-25 · 6 min read · Independent comparison
• Sennheiser Sennehiser ACCENTUM — biggest strength: hybrid ANC, a 5-band EQ, and up to 50 hours of playtime, plus an included BTD 600 dongle that gives desktop and laptop audio a serious upgrade.
• Sennheiser Sennehiser ACCENTUM — biggest trade-off: it's the heavier, more music-first option at 350 g, over-ear only, and its controls are touch-based rather than button-based.
• Lenovo Dual Mode — biggest strength: Microsoft Teams certification, dual-device connectivity, Environmental Noise Cancellation for your voice, and up to 60 hours of playback with ANC off.
• Lenovo Dual Mode — biggest trade-off: it's on-ear rather than over-ear, has no EQ, and its focus is calls and meetings rather than critical music listening.
• Who each pick is for: the ACCENTUM is for commuters, travelers and music lovers; the Lenovo is for desk workers, remote staff and anyone who lives in Microsoft Teams.
The ACCENTUM is built around listening first. Sennheiser gives it a dynamic driver covering 20 Hz to 20,000 Hz, a built-in 5-band EQ and customizable sound modes, so you can shape the signature to your taste rather than accepting a fixed tuning. Hybrid ANC blocks the outside world, and Transparency Mode flips that around so you can hear announcements, traffic or a barista without pulling the headphones off. That combination is exactly what you want on a commute, a flight or a long afternoon of focused work.
Then there's the dongle. The included BTD 600 is the detail that makes the ACCENTUM stand apart for anyone who works at a laptop or desktop. Plug it into USB-A or USB-C, and the headphones connect to your computer without the usual wireless fumbling — and your on-headphone media and call controls keep working. Switching between a desktop and a laptop is straightforward because the headphones stay paired to the dongle. Sennheiser also says this route gives you high-definition audio with no audio/video sync issues, which matters for video calls and watching anything on a screen.
Lenovo Dual Mode: Who It's For
The Lenovo Dual Mode 6550 is a work tool, and it's honest about that. It's Microsoft Teams certified with dedicated call controls and audio tuned for meetings, and it also works across other unified communications platforms. Hybrid Active Noise Cancellation is paired with Environmental Noise Cancellation, which is the part that matters on calls: it reduces the room around you and isolates your voice so you sound clear and natural in an open office, a café or an airport lounge.
Connectivity is where it earns its name. You can connect over Bluetooth 5 or through the included USB-C Bluetooth audio receiver, run two devices at once, and keep up to eight paired devices on file for quick switching. That's the setup for someone who jumps between a phone, a laptop and a desk phone all day without re-pairing anything. Battery is generous too: up to 60 hours of music playback with ANC off, 36 hours with ANC on, up to 30 hours of talk time, and a quick charge that returns roughly two hours of playback from five minutes of charging. A two-hour full charge and a three-year manufacturer warranty round out the practical side.
Comfort is clearly designed for long shifts. It's a light 165 g with a pressure-relieving headband, rotating earcups and plush memory-foam cushioning, and it comes with a cable, protective case, manual and wireless transmitter. The catch is the flip side of its focus. It's an on-ear design with circle-shaped earcups, so isolation and bass depth won't match a big over-ear, there's no EQ to tune the sound, and the 3.5 mm jack is there for wired backup rather than hi-fi listening. If your day is calls and collaboration, that's a fair trade.
• Best for music quality → Sennheiser Sennehiser ACCENTUM. A 5-band EQ, customizable sound modes and a wider over-ear fit give you more control over how things sound.
• Best for meeting and call work → Lenovo Dual Mode. Microsoft Teams certification, dedicated call controls and Environmental Noise Cancellation are aimed squarely at voice.
• Best for battery life → Lenovo Dual Mode. Up to 60 hours with ANC off and 36 with ANC on edges out the ACCENTUM's 50 hours with ANC on.
• Best for computer audio → Sennheiser Sennehiser ACCENTUM. The BTD 600 dongle connects your PC or Mac cleanly and keeps your headphone controls working.
• Best for switching between devices → Lenovo Dual Mode. Two simultaneous connections plus storage for up to eight paired devices.
• Best for long-wear comfort on a budget of effort → Lenovo Dual Mode. At 165 g with a pressure-relieving headband and rotating earcups, it's built to disappear on your head.
• Best for travel and commuting → Sennheiser Sennehiser ACCENTUM. Hybrid ANC, Transparency Mode, around-ear cushioning and fast charging suit planes, trains and busy streets.
• Best for a wired fallback → Lenovo Dual Mode. It includes a 3.5 mm jack, while the ACCENTUM relies on USB and wireless connections.
In my opinion, most people shopping this comparison should buy the Sennheiser Sennehiser ACCENTUM. It does the harder job — genuinely good sound with EQ control, strong hybrid ANC, 50 hours of battery and a dongle that fixes computer audio — and it works for music, video and calls alike. I'd only steer you to the Lenovo Dual Mode if your day is defined by Microsoft Teams meetings and you want the lightest possible headset with dual-device switching and voice isolation. Buy the ACCENTUM for the sound; buy the Lenovo for the workday.
what is anc wireless headphones
ANC stands for Active Noise Cancellation. It uses microphones and electronics to cancel outside noise, and both headphones here use a hybrid version that combines feed-forward and feedback cancellation for stronger reduction.
what does anc mean on bluetooth headphones
On Bluetooth headphones, ANC means the headset actively reduces ambient sound so you hear more of your audio and less of the room. The ACCENTUM adds Transparency Mode so you can let the outside back in, and the Lenovo pairs ANC with Environmental Noise Cancellation for clearer calls.
what is anc on bluetooth headphones
It's the same feature described in plain terms: microphones pick up surrounding noise and the headphones generate a cancelling signal to reduce it. The practical difference is battery — the Lenovo runs up to 36 hours with ANC on versus 60 with it off, while the ACCENTUM is rated up to 50 hours with full ANC on.
what is the best anc headphones
There's no single answer, because the best ANC headphone depends on your use. For music-first listening with EQ control and a computer dongle, I recommend the Sennheiser Sennehiser ACCENTUM; for Teams-certified calls with dual-device switching, I recommend the Lenovo Dual Mode. Check the current price on Amazon for each before you decide.
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See also: Plugfones Sovereign Duo vs SENNHEISER ACCENTUM True, Sennheiser Accentum vs Anker Soundcore Space One: Top Rated, Sony INZONE H9 vs Avantree Aura Loop Dual