1. FiiO Self-Developed Fully Differential 24Bit R2R DAC Equipped with a proprietary 4-channel fully differential complementary 24Bit R2R DAC, built from 192 ultra-precise 0.1% thin-film resistors with

[Mini desktop amp, 550mW high power] Supports Desktop mode, under which the balanced output power goes up to 550mW, allowing it to drive both low and high-impedance headphones with excellent dynamics and detail. [Dual CS43131 DACs, dual 8262 op-amps] Features two high-performance yet highly efficient CS43131 DAC chips and two low-noise SGM8262 op-amps. This truly dual-core golden combo brings excellent performance. [PCM 384kHz/32bit, DSD256] Supports 32bit/384kHz PCM despite its tiny size, it is capable of highly-detailed sound. [ 3.5 + 4.4 dual outputs] After repeatedly adjusted design, it finally managed to fit two headphone outputs in the compact dongle, marking true progress in packaging capabilities.

[App connectivity] Supports being controlled with the FIIO Control app. With the app, you can set the RGB lights, SPDIF output, audio filters, etc. for a more convenient experience.