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Marcus Kim

Senior Audio & Headphones Editor ยท 9 years reviewing ยท 119 articles

Marcus has spent nearly a decade testing headphones, earbuds, speakers, and audio gear for consumer publications. He runs a calibrated listening environment and measures every product independently rather than relying on manufacturer specs. At TheTestedHub, Marcus covers over-ear and on-ear headphones, true wireless earbuds, noise cancellation, Bluetooth speakers and soundbars, and Hi-Fi gear including DACs and amplifiers.

Senior Audio and Headphones Editor at TheTestedHubNearly a decade of experience reviewing consumer audio productsReal-world testing across all price tiers with calibrated measurement equipmentBackground in electrical engineering and signal processing

Areas of expertise

Over-ear and on-ear headphones

True wireless earbuds (TWS)

Active noise cancellation (ANC) measurement

Bluetooth speakers and soundbars

DACs, amplifiers, and Hi-Fi equipment

Frequency response and HRTF analysis

Latest by Marcus Kim

Sonos Move 2 Review (2026): The Most Versatile Portable

Review
โ˜… 4.6

Sonos Era 300 Review (2026): The Spatial Audio Speaker That

Review
โ˜… 4.6

Sonos Arc Review (2026): 10 Months In, Still the Best Premium

Review
โ˜… 4.6

Sennheiser Momentum 4 Review (2026): The 60-Hour Battery

Review
โ˜… 4.5

Sennheiser HD 660S2 Review (2026): The Best Open-Back Headphone

Review
โ˜… 4.6

Sennheiser Accentum Plus Review (2026): Outstanding 50-Hour

Review
โ˜… 4.4

Shure AONIC 50 Gen 2 Review (2026): The Audiophile ANC

Review
โ˜… 4.6

Shokz OpenRun Pro 2 Review (2026): The Bone-Conduction

Review
โ˜… 4.5

Samsung HW-Q990C Review (2026), Still the Best 11.1.4

Review
โ˜… 4.7

Samsung Galaxy Buds FE Review (2026): Best Sub- Earbuds We’ve

Review
โ˜… 4.3
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