FiiO Warmer R2R 27 December 2025 homepage, reviews, DAC Rating: ★★★★☆ A retro-styled R2R DAC with tube warmth, VU meters, and OS/NOS modes that leans into the sound many listeners crave
FiiO K13 R2R 10 December 2025 homepage, reviews, DAC/Amp Rating: ★★★★☆ A fully balanced 24‑bit R2R desktop DAC/amp with OS/NOS modes, big power, PEQ, and thoughtful modern design.
