The Koss KSC75 ranks #116 out of 134 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Koss
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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#116 Koss KSC75: $19.99 Amazon eBay
Pros: An extremely low cost and a featherweight 43 g clip-on design make it easy to carry and wear for long stretches. The midrange is close to target, with the low mids within 0.2 dB, so voices sound natural, and the slightly lifted treble of about 2 to 3 dB adds clarity. The open back gives an airy sound, and 101 dB sensitivity at 60 ohms works from a phone.
Cons: Sub-bass is about 17 dB below target under 60 Hz, so there is almost no rumble and bass-heavy music sounds thin. Bass in the 60 to 200 Hz range is also about 2 dB low, and a 4 dB peak near 5.3 kHz can add some edge. The open design leaks sound and gives no noise isolation.
| Back | Open |
|---|---|
| Connection | Wired |
| Deviation From Target | 3.33 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 35mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 15Hz - 25kHz (Manufacturer specified) |
| Harman Preference Score | 54 (measured by oratory1990, via AutoEQ) |
| Impedance | 60 ohms |
| Sensitivity | 101 dB SPL/1mW |
| Tonal Tilt | +1.22 (negative is warmer, positive brighter) |
| Weight | 0.1 lbs (43 g) |
EQ preset to match the Harman target
Set a preamp of -6.3 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.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +6.2 dB | 0.70 |
| Peak | 610 Hz | +2.2 dB | 0.63 |
| Peak | 2,358 Hz | -3.4 dB | 1.92 |
| Peak | 169 Hz | -2.3 dB | 0.77 |
| Peak | 74 Hz | +2.0 dB | 2.94 |
| High shelf | 10,000 Hz | -3.0 dB | 0.70 |
| Peak | 4,033 Hz | +3.3 dB | 5.88 |
| Peak | 5,191 Hz | -3.4 dB | 5.53 |
| Peak | 7,220 Hz | -1.5 dB | 2.25 |
| Peak | 4,517 Hz | +0.7 dB | 4.34 |
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