Experience fast transient response, rich vocal intimacy, and effortless acoustic detail with the Fosi Audio Carbon 12. Featuring an ultra-thin pure carbon diaphragm using proprietary UTPT technology, a TC4 titanium alloy housing, and forged carbon fiber faceplates, the Carbon 12 combines high-end craftsmanship with a warm, full-bodied sound signature.

Key Features

* Ultra-Thin Pure Carbon Diaphragm
Utilizing Ultra Thin Ply Technology (UTPT), the 12mm dynamic driver achieves metal-like rigidity with lightweight speed, delivering accurate transient response and low harmonic distortion across all frequencies.
* TC4 Titanium Alloy Shell and Forged Carbon Faceplate
Crafted from precision CNC-machined TC4 titanium alloy, the rigid body suppresses internal driver resonance while offering high scratch resistance. Each earpiece features a forged carbon fiber faceplate with a unique natural pattern.
* Dual Chamber Design with Damping Foam
An open front chamber reduces pressure build-up inside the ear canal for a wide and natural soundstage. Dedicated rear chamber acoustic foam absorbs standing wave reflections to keep the midrange clear and uncolored.
* Custom Sound Tuning Options
Fine-tune your listening experience using three interchangeable nozzle tuning foams that adjust treble brightness, alongside three sets of acoustic ear tips that let you customize bass response.
* Ergonomic and Lightweight Fit
Weighing only 7.5 grams per earbud, the rounded internal contours follow natural ear anatomy to provide long-lasting comfort during extended listening sessions.
* High-Purity Silver-Plated OFC Cable
Includes a four-strand braided silver-plated oxygen-free copper cable with standard 0.78mm 2-pin connectors, offering clean signal transfer and easy cable upgrades.

What is in the Box

* 1 Pair x Fosi Audio Carbon 12 IEM Earbuds
* 1 x 4-Core Silver-Plated OFC Cable with 0.78mm 2-Pin Connectors
* 3 Pairs x Triple-Tunable Silicone Ear Tips (Small, Medium, Large)
* 3 Pairs x Replaceable Nozzle Tuning Foams (Low, Medium, High Density)
* 1 x Pair of Replacement Tweezers
* 1 x Carrying Case
* 1 x User Manual

Technical Specifications

* Driver Type: 12mm Dynamic Driver with UTPT Thin-Ply Pure Carbon Diaphragm
* Housing Material: TC4 Titanium Alloy with Forged Carbon Fiber Faceplate
* Frequency Response: 20Hz - 40kHz
* Impedance: 37 Ohms
* Sensitivity: 108 dB / Vrms @ 1kHz
* Total Harmonic Distortion: Less than or equal to 0.5 percent @ 1kHz
* Weight: 7.5g per earbud
* Connector Type: 0.78mm 2-Pin Detachable
* Plug Termination: 3.5mm Single-Ended