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Marcus Kim

Senior Audio & Headphones Editor · 9 years reviewing · 242 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

Wired Headphones for Mixing: The 5 Worth Buying

Guide

In-Ear Monitors for Stage Musicians Who Need Reliability

Guide

5 Consumer Reports Earbuds Tested 2026

Guide

6.5 vs 6×9 Car Speakers: Driver-Reviewed Picks

Guide

Condenser Mic for Vocals: What to Look For

Guide

How to Choose a Competition Subwoofer: Buying

Guide

Sony vs AGPTEK: Which AM/FM MP3 Player Wins

Guide

Noise Cancelling Headphones for Deep Office Focus

Guide

Looking for the Best Single Ear Headset for PC?

Guide

Need a Cecilio Cello That Won’t Fight

Guide
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