Denon AH-C840NCW Weiss

Audio & ANC

Noise Cancelling Adaptive Hybrid Noise Cancelling
Transparency Mode Yes
Driver Size 12 mm
Driver Type Free-Edge bio cellulose
Adjustable EQ Yes

Bluetooth

Quick Pair Google Fast Pair, Windows Swift Pair
Bluetooth Version 5.3
Bluetooth Codecs AAC, SBC, LC3
Auracast Yes
Multipoint Yes

Battery & Charging

Battery Life–Buds 10 hours (ANC off);7 hours (ANC On)*
*Testing performed by Denon in January 2025 using a production AH-C840NCW unit and software paired with a smartphone. Playback track was a stereo AAC-encoded file. Volume was set to 50% with active noise cancellation disabled, and then tested again at the same volume level with active noise cancellation enabled. Actual battery life varies based on device settings, environment, usage, and additional factors.
Battery Life with Case 35 hours (ANC off); 24 hours (ANC On)**
**Testing performed by Denon in January 2025 using a production AH-C840NCW unit and software paired with a smartphone. Playback track was a stereo AAC-encoded file. Volume was set to 50% with active noise cancellation disabled, and then tested again at the same volume level with active noise cancellation enabled. Actual battery life varies based on device settings, environment, usage, and additional factors.
Charging Cable Type USB-C to USB-C
Wireless Charging (Case) Yes
Quick Charge 5 min for 1 hr playback
Case Charge Time 2 hr

Voice Calls

Number of Microphones 2

Comfort & Fit

Tips S, LONG S, M, L

Controls

Touch Controls Yes, customizable
App Yes, Denon Headphones App

General

Colors Available Black, White
Water Resistance IPX4
Earbud Dimensions, mm 35.0 × 21.3 × 25.4
Earbud Weight, g 5.1 g
Case Dimensions, mm 58 × 48 × 288 mm
Case Weight, g 54 g