Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
The choice is between a studio-grade professional headset and a versatile consumer headphone for daily use.
Pick the MMX 300 PRO if you demand broadcast-quality audio and a built-in microphone for professional communication.
Pick the QuietPlus 81 if you want a lightweight, all-purpose headphone for commuting, calls, and casual listening.
Ask anything — we'll answer with MMX 300 PRO and QuietPlus 81 Over-Ear Headphones in mind.
Pindear may earn a commission when you buy through these links. Winners are determined by numeric spec comparisons only; non-numeric features (app quality, ecosystem, real-world feel) are covered in the verdict.
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