FiR Audio / Project K

＜＜december 2025 New Product！＞＞Project K is a limited edition flagship IEM that combines cutting edge acoustic and visual design to deliver a coloration-free, distortion-free musical experience.

■ [Reaching for Auditory Perfection] A Limited-Edition Flagship Representing the Pinnacle of Technology
- Project K is a limited-edition flagship IEM that represents the pinnacle of FiR Audio's audio technology, fusing cutting-edge auditory and visual design. At the heart of Project K are premium components carefully selected to deliver unparalleled sound quality. The titanium shell with graphite inlay not only provides durability but also adds a touch of elegance. The faceplate features Blue Copper with sapphire glass, embodying FiR Audio's commitment to form and function. The culmination of more than a decade of innovation, Project K embodies FiR Audio's mastery of crafting exceptional audio experiences and represents the company's relentless quest to bring unparalleled sound quality within reach through groundbreaking technological innovations.

■ Hybrid 5-Driver Configuration with Proprietary Driver Technology
- Project K features a hybrid 5-driver configuration featuring a newly developed proprietary 9mm Kinetic Bass dynamic driver, two proprietary open BA drivers for the mid-range, one for the mid-high range, and one open BA driver with a sound reflector for the high range, all with premium silver internal wiring. The proprietary "Kinetic Bass" technology positions the drivers open toward the outside of the IEM shell, achieving three-dimensional bass through both normal air conduction and pseudo-bone conduction, which intentionally resonates the shell body to transmit low frequencies directly to the auricular cartilage. The headphones also feature the proprietary "Open Acoustics System," comprised of three main components: an open driver, a sound reactor, and a sound reflector. This delivers excellent high-frequency extension with a smooth, open feel, allowing pure, natural sound to flow freely into the ear canal. The reflector reflects sound generated by the high-frequency open BA driver and directs it forward. The open BA driver is FiR Audio's proprietary technology that reduces distortion associated with conventional BA drivers that use a sound tube transmission method.

■ The unique ATOM Venting System reduces ear fatigue and expands the soundstage
・The ATOM Venting System is FiR Audio's proprietary technology that revolutionizes the comfort and sound quality of in-ear monitors. Project K features the unique ATOM VentXs module, which releases unnecessary air pressure from the sealed ear canal, keeping the eardrum relaxed and eliminating ear fatigue, improving the sound field and providing a more natural sound. Project K aims to not only deliver great sound, but also to eliminate presence and allow the music to speak for itself with absolute purity, delivering a music experience free of coloration and distortion.

■ Silver-plated copper 4-core premium 4.4mm balanced cable
・The included cable for Project K is a 4-core coaxial silver-plated copper premium 4.4mm balanced cable, ensuring signal transmission of exceptional purity. The internal conductor is made of 24x0.06mm silver-plated copper, the shield is made of 80x0.06mm silver-plated copper, and the metal fittings are beautifully nickel-plated.

■Two Types of Eartips and Premium White Leather Carrying Case
・Project K comes with two types of eartips, each designed for a comfortable fit. It also comes with a special carrying case made of premium white leather.

[Note]
・Due to the design of the faceplate, the pattern orientation and color of the faceplate may vary from product to product. Please note that we cannot accept product exchanges due to design differences.
・When re-cabling, please confirm that the IEM 2-pin diameter is 0.78mm and is compatible with this product's specifications. Using a re-cabling with a 2-pin diameter smaller than this product's specifications may cause the product to become more easily disconnected and fall. Conversely, using a thicker re-cabling may damage the connector or cause it to become loose. Connector damage or other abnormalities caused by re-cabling are not covered by the warranty, so please use with caution and understanding.

Specifications
■Product Name: Project K
■Driver: Hybrid
■Driver Count: 1DD+4BA / 5 Drivers (per side)
■Driver Configuration
・1 x 9mm Kinetic Bass Dynamic Driver
・2 x Open-Back Acoustic Drivers for Mid-Frequency
・1 x Open-Back Acoustic Driver for Mid-High Frequency Range
・1 x Open-Back Acoustic Driver with Sound Reflector for High Frequency Range
■Proprietary Technology
・KINETIC BASS
・OPEN ACOUSTICS SYSTEM
・ATOM VENTING
・ATOM Vent Xs Module
■Type: Closed-Back
■Frequency Range: 20Hz - 20KHz
■Impedance: 15Ω
■Material/Design: Titanium Shell, Blue Copper Faceplate with Sapphire Crystal
■Cable/Plug
・Cable: Silver-Plated Copper 4-Core Cable
・Cable Length: Approx. 120cm
・Connector: IEM 2-Pin 0.78mm (flat)
- Plug: 4.4mm balanced (straight)
■Accessories
- 4.4mm balanced cable
- Silicone ear tips: 3 pairs (S/M/L)
- Foam ear tips: 3 pairs (S/M/L)
- Cleaning tool, carrying case
■Manufacturer's Warranty: 1 year for the product / 90 days for the cable and accessories

*The warranty period for this product begins from the date of purchase. Please be sure to keep your receipt, invoice, and dated receipt.
*Images and specifications are subject to change without notice to improve performance and quality.
*The above specifications are based on information as of December 2025.