The Bose QuietComfort Ultra outperforms the Marshall Monitor III ANC in noise cancellation (RTINGS reports 38 dB vs 30 dB), sound clarity, and overall build quality, justifying its higher price. The Marshall Monitor III ANC offers a more fashion‑forward look and longer battery life at a lower cost, but its ANC and codec support lag behind premium rivals. For users who prioritize top‑tier ANC an...
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