[[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.]