Headphones — Fosi Audio i5

The i5 is a planar-magnetic over-ear headphone from Fosi Audio, built with an exceptionally wide bandwidth and a substantial maximum sound pressure level. The i5 brings Fosi's considered engineering to an accessible open-back over-ear format.

Key specs that matter

Frequency response spans an exceptionally wide 10Hz to 50,000Hz within plus-or-minus 10dB. Maximum sound pressure level is at least a substantial 120dB SPL at 1kHz at 5% THD. Connection uses a 3.5mm jack. Sensitivity is notably high at 98dB SPL at 1kHz/1mW. Weight is 550g.

Sound and use context

Expect the exceptionally fast, detailed character planar-magnetic driver technology is broadly celebrated for, with the notably high 98dB sensitivity providing genuine dynamic ease at this accessible price tier.

Pairing

The notably high 98dB sensitivity makes the i5 compatible with a wide range of sources, including modestly powered portable devices.

Alternatives

Other manufacturers' comparable accessible planar-magnetic headphones offer alternatives for buyers wanting to compare features at a similar price point.