Fiio K13 R2R Compact Desktop DAC and Headphone Amplifier Bluetooth Hi-Res Black

FIIO K13 Compact Desktop R2R architecture DAC and Headphone Amplifier Black

• Fully differential true 24Bit R2R DAC resistor arrays
  
• NOS/OS dual modes
  
• 2400mW+2400mW powerful output
  
• Bluetooth 5.4 with LDAC/AAC/SBC codecs
  
• DC/AC dual power supplies
  
• 10-band PEQ with app and web interface control
  
• Fully balanced audio amplifier circuit
  
• XLR+RCA preamplifier/line output
  
• LCD display with a constant indication function
  
• Adjustable RGB lighting/auto power off function
  

Fully differential true 24Bit R2R resistor arrays DAC

FIIO’s proprietary four-channel fully differential 24-bit R2R resistor array DAC is composed of 48 precision thin-film resistors per channel, for a total of 192 resistors across four channels. Each resistor features 0.1% accuracy and low temperature drift (30ppm). This R2R DAC allows the K13 R2R to deliver a uniquely rich and musical sound.

Comparison between fully differential and typical architectures

The K13 R2R employs a fully differential architecture that leads to lower noise and fewer FFT harmonics, resulting in a darker music background.

Preamplifier + power amplifier output

With a wide variety of inputs and outputs, this unit functions as both a preamplifier and a power amplifier, catering to various listening preferences. It also supports PCM 384kHz/32bit and DSD256 decoding, allowing it to effortlessly process high-resolution audio signals to deliver rich sonic detail and for an outstanding listening experience.

Fully balanced audio amplifier circuit

The entire audio chain, including the R2R DAC, LPF, volume control, and headphone amp, uses fully differential signal processing for excellent interference rejection, minimal distortion, and high dynamic range. The amplification circuit also features gain control, headphone protection mechanisms, and POP noise elimination for a robust and reliable audio experience.

Multi-rail power supply – Robust performance

With up to 18 low-noise LDOs and 5 DC-DC converters in total, this unit employs a multi-rail power supply to provide strong and clean power for exceptional audio output.