Fosi I5

The reviewer is highly impressed with the Fosi Audio i5 planar headphones, praising their massive size, extreme comfort, and robust build quality, while noting they outperform many more expensive competitors. However, he criticizes the overly thick and unwieldy cable, which he finds annoying due to its stiffness and weight. Overall, he strongly recommends them despite the cable issue.

The reviewer finds the Fosi Audio i5 to be an excellent value, especially at its Kickstarter price, offering a smooth, transparent, and well-balanced sound with impressive staging and imaging. While it has a slight treble emphasis that can be edgy on some setups and lacks deep sub-bass, it outperforms more expensive competitors like the Verum 2 and Sennheiser HD 660S2 in overall tonality and value. The reviewer recommends it for most music genres but suggests avoiding it for deep bass electronic music.

The reviewer spent time with the Fosi Audio i5 planar magnetic headphone, comparing it to similar-priced models. He finds the build quality impressive for a first effort, but notes the headphone is heavy, clamps a bit, and develops a hotspot on the head due to the suspension strap. Sonically, he suggests it competes well in its price range, though the overall comfort issues temper his enthusiasm.

The reviewer received the Fosi I5 planar magnetic headphones as an unexpected gift and was pleasantly surprised by their performance. He found them very enjoyable for music listening, with a smooth, laid-back sound that reminded him of electrostatic speakers, and considered them excellent value at around €600. However, he noted some minor issues with the cable length and the non-screw-on adapter, which he had to fix with tape.

The reviewer reports that Fosi Audio has fixed the bass roll-off issue in the i5 headphones by adding a foam ring to improve the seal, resulting in a flatter bass response. While the mid-range has become slightly more uneven, the overall sound is still spacious, clean, and enjoyable, and the reviewer recommends the updated version with confidence.

The reviewer finds the Fosi Audio I5 planar magnetic open-back headphone to be a unique and interesting product, with a solid build, comfortable fit, and good detail retrieval, but notes some quirks like a lack of sub-bass due to a leaky seal and modal issues in the frequency response. He recommends it for those who appreciate its distinctive sound and are willing to use the included mod kit to improve bass performance.