Research note: This is an independent, research-based assessment built from official specifications and product documentation. We have not claimed a hands-on laboratory test.
Key specifications
- 10mm dynamic drivers with Class A/B amplification
- Bluetooth 5.4
- aptX Lossless, aptX Adaptive, LDAC, AAC and SBC
- Up to 12 hours buds / 39 hours total with ANC off
- IPX5 water resistance
- Multipoint, Google Fast Pair and wireless charging
Sound architecture and codecs
Cambridge Audio brings a miniature Class A/B amplifier topology to each earbud, paired with a 10mm driver. The intention is controlled, low-noise output with the company’s house approach to musical balance. Codec support is exceptional: aptX Lossless and Adaptive cover compatible Snapdragon devices, LDAC serves many Android phones, and AAC and SBC maintain universal compatibility. Codec names do not guarantee better mastering, but the A100 give informed users real choice.
ANC, transparency and calls
Adaptive active noise cancellation responds to surroundings, while transparency mode provides awareness without removing an earbud. Six microphones support cancellation and calls. The seal remains fundamental, so users should test tips before judging bass or ANC. Wind can still challenge in-ear microphones, and strong cancellation should not be used as a substitute for attention outdoors. The seven-band EQ offers enough control to correct preference without forcing extreme presets.
Battery and charging
With ANC disabled, Cambridge Audio claims up to 12 hours from the earbuds and 39 hours including the case. With ANC active, the combined figure is about 21 hours. A ten-minute charge can provide up to 3.2 hours under ANC-off conditions, and a full earbud charge takes about 1.1 hours. Wireless charging is supported by compatible pads. Actual endurance will depend on codec, volume, calls and processing.
Fit and durability
Each earbud weighs only 4.7g and the case 38.7g, for a combined carry weight of roughly 48.1g. That low mass is promising for long listening, though nozzle angle and tip seal remain individual. IPX5 protection is stronger than basic splash ratings and suits workouts or rain, but it does not cover immersion. The case should stay dry, and charging contacts need to be clean before the buds are returned.
App and connectivity
Bluetooth 5.4, multipoint and Google Fast Pair make the A100 well suited to Android and mixed-device use. The Melomania app manages the seven-band EQ, ANC, transparency, control assignments and firmware. Broad capabilities can make the first session feel busy, so configure essentials first: secure fit, control layout and connection behaviour. Then compare codecs under stable conditions rather than assuming the highest setting is always most reliable.
Who should buy it?
The A100 suit listeners who value codec choice, low earbud weight and strong ANC-off endurance. They are especially logical for Android users. iPhone owners wanting automatic Apple switching, spatial integration and Find My depth may prefer AirPods.
Alternatives to consider
Technics EAH-AZ100 add three-device multipoint and magnetic-fluid drivers. Sony WF-1000XM6 provide a mature ANC ecosystem, while Sennheiser Momentum True Wireless 4 are another sound-led aptX Adaptive option.
Verdict
Cambridge Audio has made a credible enthusiast earbud without ignoring everyday needs. The combination of aptX Lossless, LDAC, light shells, IPX5 and long potential battery life is distinctive. ANC reduces the headline endurance, but buyers who understand that trade-off receive a flexible, music-first package.