Koss KPH30i vs Moondrop Old Fashioned

Last updated: October 17, 2026

Short answer: the Koss KPH30i. It ranks #180 of 481 over-ear headphones by sound quality, rated 3.7/5, at $29.99. The Moondrop Old Fashioned ranks #321, rated 3.1/5, at $24.99, $5 cheaper, not enough of a saving to outweigh the sound-quality gap.

Koss KPH30i vs Moondrop Old Fashioned

The Koss KPH30i is the better-sounding pick. A very low price makes it an easy disposable or backup pair, and the 60 ohm, 101 dB sensitivity runs from any phone. The catch: Sub-bass is nearly 12 dB under target below 60 Hz, so there is no rumble and deep bass is essentially missing.

Why pick the Moondrop Old Fashioned: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The catch: A 4.8 dB peak near 3.2 kHz can make cymbals and sibilance sound sharp.

Buy the Koss KPH30i. It is rated higher for sound quality, and the $5 saving on the Moondrop Old Fashioned is not enough to make up the difference.

Want more options? Browse the full Headphones rankings.

Koss KPH30i

A very low price makes it an easy disposable or backup pair, and the 60 ohm, 101 dB sensitivity runs from any phone.

Amazon $29.99 eBay
$29.99
Moondrop Old Fashioned

Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural.

Amazon $24.99 eBay
$24.99

Prices 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

Koss KPH30i Moondrop Old Fashioned
Price$29.99$24.99
Ranked#180 of 481 in Over-Ear Headphones#321 of 481 in Over-Ear Headphones
Form FactorOver-earOver-ear
Harman Preference Score76 (measured by oratory1990, via AutoEQ)63 (median of 5 squig.link measurements, calibrated to AutoEQ)
Deviation From Target2.62 dB standard deviation3.40 dB standard deviation
Tonal Tilt-0.38 (negative is warmer, positive brighter)+0.55 (negative is warmer, positive brighter)
Sub-bass ExtensionFalls 6 dB below target at 50 Hz (-13.9 dB at 30 Hz)Falls 6 dB below target at 75 Hz (-18.2 dB at 30 Hz)
ConnectionWiredWired
BackOpenOpen
Driver TypeDynamicDynamic
Drivers1 x 35mm dynamic1 x 40mm dynamic
Impedance60 ohms32 ohms
Sensitivity101 dB SPL/1mW109 dB/Vrms
Frequency Response15Hz - 25kHz (Manufacturer specified)20Hz - 32kHz
Built-in MicrophoneYes-

Frequency Response Compared

Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.

Koss KPH30iMoondrop Old FashionedHarman target
Frequency response of the Koss KPH30i and Moondrop Old Fashioned-24-18-12-60+6+12+18dB20501002005001k2k5k10k20k

Measurement data: the Koss KPH30i from audioamigo, capraaudio, kr0mka and superreview; the Moondrop Old Fashioned from audioamigo, daemonxar, kr0mka, listener and superreview, all via squig.link.

More top alternatives to Koss KPH30i: