Audio Technica ATH-S300BT vs KEF Mu3 – Which Headphones Are Better? (2026)

Get 2.5 hours of use on a 3-minute rapid charge. High-quality, built-in microphone ensures crystal-clear calls. 40 mm drivers provide powerful audio reproduction from a Bluetooth wireless signal. Multipoint pairing function allows you to stay connected to two Bluetooth devices at once. Low latency mode improves synchronicity between audio and video for smooth streaming and gaming. Class-leading battery life with up to 90 hours of continuous use on a full charge with ANC off and 60 hours with ANC on. Wireless over-ear headphones with digital hybrid noise-cancelling technology let you enjoy a private, high-quality sound space. Easy-touch buttons in the earcup provide intuitive control of volume, music/video playback, and calls, and give you access to Siri and Google Assistant. Hear-through function allows you to hear ambient sounds (plus your own unmuffled voice) so you can talk to others around you without removing your headphones.

Voice Call - Take calls with a simple press. IPX5 Splash-Proof - Designed for all weather conditions. Fast Charging - Fast charging of 5 mins allows for 1-hour use. Ambient Mode - When you need to be aware of the surroundings. Up to 24-hr use - 9 hours at full charge plus 15 hours with charging case. Bluetooth 5.0 - For exceptionally stable connections with both iOS and Android devices. Active Noise Cancellation - Tuned to eliminate external sound while preserving nuance and detail.

Key Differences

There is a noticeable difference in weight (52.6â€¬ Gm vs 258 GM), which may affect comfort during extended use. The driver size differs between the two (8.2 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (20 Hz - 20000 Hz vs 20Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (16 Ohm vs 44.5 ohm), which can affect compatibility and audio output when used with different devices. KEF Mu3 and Audio Technica ATH-S300BT offer different noise cancellation capabilities (Active NC vs Active Noise Cancelling), which can impact how effectively they block external noise. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Battery life varies between the two (9 / 15 Hours vs 60 Hours), which affects how long you can use them on a single charge. KEF Mu3 uses Bluetooth 5.0 while Audio Technica ATH-S300BT supports Bluetooth 5.1, which can impact connectivity stability and efficiency. KEF Mu3 and Audio Technica ATH-S300BT are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features.

Verdict: Choosing between KEF Mu3 and Audio Technica ATH-S300BT depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Battery Life: 9 / 15 Hours vs 60 Hours
Driver Size: 8.2 mm vs 40 mm
Bluetooth: 5.0 vs 5.1
Weight: 52.6â€¬ Gm vs 258 GM
Impedance: 16 Ohm vs 44.5 ohm

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Key Differences

Top Differences