FIIO K11 R2R Headphone Amplifier - DAC/AMP

Product description

PC PeripheralsHeadsets & AudioExternal sound cards from FIIO

K11 R2R headphone amplifier is a DAC/AMP from FIIO that offers advanced audio processing with a self-developed, four-channel fully differential 24-bit R2R DAC. This DAC uses dual 48-precision thin film resistor arrays per channel, resulting in a total of 192 resistors with 0.1% tolerance and minimal temperature drift to ensure an unbeatable sound signature. The goal of the product is to provide a superior audio experience for headphone users.

The device is designed to offer excellent noise performance thanks to its fully differential architecture, which reduces unwanted FFT harmonics compared to conventional designs. It also features dual NOS (Non-Oversampling) and OS (Oversampling) modes, allowing listeners to choose between authentic, organic sound and high-resolution audio with upsampling to 384kHz. K11 RAR supports PCM 384kHz/24bit and DSD256 decoding, allowing it to handle high-precision audio signals with high integrity.

Summary

• 24-bit R2R DAC
• 192 resistors with 0.1% tolerance
• Headphone users
• Fully differential architecture
• Dual NOS and OS modes

Specifications:

• Dimensions: 147x133x32.3 mm
• Weight: 420 g
• Main Control Chip: GD32F303RET6 (single-chip microcomputer)
• DAC: Fully differential true 24-bit R2R resistor arrays
• Volume Control Chip: NJW1195A
• USB Input: 384kHz/32bit, DSD256
• Coaxial Input: 192kHz/24bit
• Optical Input: 96kHz/24bit
• USB Connector: Type-C
• Display: Custom LCD screen
• Power Supply: DC12V 2A external adapter
• SE Power Output 1: L+R ≥ 460mW + 460mW (32Ω, THD+N <1%) [32Ω/single-ended/high gain]
• SE Power Output 2: L+R ≥ 50mW + 50mW (300Ω, THD+N <1%) [300Ω/single-ended/high gain]
• BAL Power Output 1: L+R ≥ 1300mW + 1300mW (32Ω, THD+N <1%) [32Ω/balanced/high gain]
• BAL Power Output 2: L+R ≥ 220mW + 220mW (300Ω, THD+N <1%) [300Ω/balanced/high gain]
• Frequency Response: 20 Hz ~ 50 kHz (attenuation <1.3 dB)
• SNR: ≥115 dB (A-weighted)
• Noise Floor: PO < 7.2 µV (A-weighted); BAL < 14.1 µV (A-weighted)
• Output Impedance: PO < 1Ω (32Ω load); BAL < 1.5Ω (32Ω load)
• THD+N: LO < 0.02% (1kHz/10kΩ)

Article number:

Our article number: 36765
Manuf. article number: K11-R2R

Brand

Properties

Colour

Black

Warranty

Manufacturer's warranty

1 year warranty