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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

5 Best Conference Call Bluetooth Headsets 2026 | Clear Audio for All-Day Meetings

Guide

5 Best Wireless Earbuds for Running 2026

Guide

5 Best Compact Car Amplifiers 2026 | Big Power, Small Package

Guide

5 Best Conference Bluetooth Speakers 2026 | Clear Audio for Any Meeting Room

Guide

5 Best Compact CD Stereo Systems 2026 | Rich Sound, Small Footprint

Guide

5 Best Conference Call Microphone Speakers 2026 | Speakerphones for Home and Office

Guide
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5 Best Conrad Johnson Preamps 2026 | Top Tube Preamp Picks

Guide

5 Best Noise Cancelling Earbuds for Flights 2026

Guide

5 Best Connections for Soundbars 2026 | HDMI ARC, optical, and more compared

Guide
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