FiiO K13 R2R

The FiiO K13 R2R is a 24-bit R2R desktop DAC and headphone amplifier with dual power supply and multiple output options.

• The description claims that the proprietary four-channel, fully symmetric 24-bit R2R resistive array DAC provides a rich and musical sound.
• The description claims that the fully differential architecture reduces noise and FFT overtones, resulting in a darker background.
• The description claims that the two NOS/OS modes offer different listening experiences, with NOS mode preserving the original sampling rate for a natural sound.