The Fosi Audio i5 ranks #72 out of 202 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fosi Audio
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#72 Fosi Audio i5: $589.99 Amazon eBay
Pros: A large 97mm planar magnetic driver scores 80.7 for preference in the median of four squig.link measurements, with the low mids about 1 dB over target for a full, warm tone. Air above 10 kHz runs about 4.4 dB hot, which adds openness and detail to strings and cymbals. At 28 ohms and 98 dB/mW it is easier to drive than many planars and works from a modest desktop DAC or a capable dongle.
Cons: Sub-bass drops roughly 5.8 dB below target and is already 6 dB down by 42 Hz, so deep synth bass and kick drum rumble lack impact. A 5.8 dB dip near 2.2 kHz and a presence region about 3.2 dB low push vocals back, while the 5.1 dB peak at 10.9 kHz can sound splashy. It weighs 550 g, and the open back leaks sound and blocks no outside noise.
| Released | Apr 2025 (1 year ago) |
|---|---|
| Back | Open |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.17 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 97mm planar magnetic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 50kHz (Manufacturer specified) |
| Harman Preference Score | 81 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 28 ohms |
| Sensitivity | 98 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 40 Hz (-6.6 dB at 30 Hz) |
| Tonal Tilt | -0.28 (negative is warmer, positive brighter) |
| Weight | 1.2 lbs (550 g) |
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