Thinksound ov21 Review: Ranked #61 of 134

Last updated: October 10, 2026

The Thinksound ov21 ranks #61 out of 134 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Prices on this page were last checked October 10, 2026 at 5:37 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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#61 Thinksound ov21: $97.00 Amazon eBay

Pros: Sub-bass under 60 Hz sits about 4 dB above the Harman target and the 60 to 200 Hz bass about 2 dB above, so kick drums and bass lines have real weight and rumble. At 50 ohms and 99 dB/mW it runs loudly from a phone or laptop without an amp. The closed back isolates from room noise, and an inline microphone allows calls.

Cons: A dip of about 6 dB near 7 kHz followed by a 5 dB peak near 12 kHz leaves cymbals and sibilance uneven, dull in one place and glassy in another. Low mids are about 2.5 dB under target, which thins male vocals and guitar body. At 453 g it is the heaviest of its closest rivals, and the Audio-Technica ATH-M40x holds a higher rating at a similar price.

ReleasedNov 2021 (4 years ago)
BackClosed
Built-in MicrophoneYes
ConnectionWired
Deviation From Target2.79 dB standard deviation
Driver TypeDynamic
Drivers1 x 45mm dynamic
Form FactorOver-ear
Frequency Response5Hz - 22kHz (Manufacturer specified)
Harman Preference Score78 (measured by oratory1990, via AutoEQ)
Impedance50 ohms
Sensitivity99 dB/mW
Tonal Tilt-0.12 (negative is warmer, positive brighter)
Weight1 lbs (453 g)
EQ preset to match the Harman target

Set a preamp of -4.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

FilterFrequencyGainQ
Low shelf105 Hz-4.2 dB0.70
Peak241 Hz+5.0 dB0.79
Peak122 Hz-4.5 dB1.90
Peak2,933 Hz-4.2 dB1.60
Peak5,637 Hz-4.4 dB5.53
High shelf10,000 Hz-7.2 dB0.70
Peak8,185 Hz+3.2 dB2.20
Peak1,045 Hz-1.7 dB2.30
Peak57 Hz+1.3 dB3.71
Peak498 Hz+0.8 dB2.38