The Fosi Audio Carbon12 is a pair of wired in-ear monitors built around a 12mm dynamic driver. The driver uses Fosi Audio's UTPT (Ultra Thin Ply Technology) pure carbon diaphragm. Frequency response is 20Hz to 40kHz, and total harmonic distortion is rated at 0.5% or less at 1kHz.
Each earpiece has a TC4 titanium alloy housing and a forged carbon fiber faceplate. The faceplates are made by layering, stamping, controlled heating, forging and CNC machining, so each has its own pattern. Each earpiece weighs 7.5 grams and has a rounded shell shaped to follow the contours of the ear.
The acoustic design uses two chambers. An open front chamber is meant to relieve pressure in the ear. Damping foam in the rear chamber absorbs standing waves and reflections, and a diffused pressure-relief vent balances internal pressure. The tuning is warm and full-bodied, with a slightly forward midrange.
- Brand
- Fosi Audio
- Model
- Carbon12
- Type
- Wired in-ear monitors (IEMs)
- Driver
- 12mm dynamic driver with UTPT pure carbon diaphragm
- Housing
- TC4 titanium alloy with forged carbon fiber faceplate
- Frequency response
- 20Hz to 40kHz
- Distortion
- 0.5% or less THD at 1kHz
- Impedance
- 37 ohms
- Sensitivity
- 108dB/Vrms at 1kHz
- Weight
- 7.5 g per earpiece
- Cable
- Detachable four-core silver-plated oxygen-free copper, braided
- Cable connector
- 0.78mm 2-pin
- Plug
- 3.5mm single-ended
- Tuning options
- 3 ear tip styles in multiple sizes; low-, medium- and high-density nozzle foams
- Included
- Ear tips, nozzle tuning foams, tweezers, 3.5mm cable