Short answer: the Superlux HD 668B. It ranks #29 of 481 over-ear headphones by sound quality, rated 4.3/5, at $49.99; the HyperX Cloud III ranks #170, rated 3.8/5, and costs $57.99, so there is not much of a tradeoff to weigh.
The Superlux HD 668B is the better-sounding pick. Measured response gives it an excellent Harman preference score of 89 with a 1.75 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. Watch for: A 7.3 dB peak near 5.6 kHz can make cymbals and sibilance sound sharp.
Why pick the HyperX Cloud III: A low priced closed back gaming headset with a built in microphone that still scores 77 on the preference scale in squig.link hobbyist measurements. Watch for: The 3 to 6 kHz presence range sits about 3 dB below target, which softens footsteps, vocal edges and detail cues.
Buy the Superlux HD 668B. It is rated higher for sound quality than the HyperX Cloud III and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Headphones rankings cover every ranked option.
Measured response gives it an excellent Harman preference score of 89 with a 1.75 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
Amazon $49.99 eBay
A low priced closed back gaming headset with a built in microphone that still scores 77 on the preference scale in squig.link hobbyist measurements.
Amazon $57.99 eBayPrices on this page were last checked October 16, 2026 at 5:46 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Superlux HD 668B | HyperX Cloud III | |
|---|---|---|
| Price | $49.99 | $57.99 |
| Ranked | #29 of 481 in Over-Ear Headphones | #170 of 481 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Back | Open | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 50mm dynamic | 1 x 53mm dynamic |
| Impedance | 56 ohms | 64 ohms |
| Sensitivity | 98 dB/mW | - |
| Frequency Response | 10Hz - 30kHz | 10Hz - 21kHz (Manufacturer specified) |
| Weight | 0.5 lbs (222 g) | 0.7 lbs (308 g) |
| Harman Preference Score | 89 (measured by oratory1990, via AutoEQ) | 77 (median of 2 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.75 dB standard deviation | 2.16 dB standard deviation |
| Tonal Tilt | +0.19 (negative is warmer, positive brighter) | -0.55 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 42 Hz (-11.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.4 dB at 30 Hz) |
| Built-in Microphone | - | Yes |
Related Headphone Comparisons
More top alternatives to Superlux HD 668B: