FiiO unveils with its K9 Pro an excellent DAC and headphone amplifier combo, using exclusively high-end audio components, renowned for their sonic performance, within a very precise assembly. The K9 Pro features a high-end AK4499 DAC, two THX-AAA 788+ amplifiers, a dual femtosecond clock, a QCC5124 Bluetooth receiver, an optimized power supply with fully balanced audio circuits. The K9 Pro is equipped with the legendary AKM AK4499 DAC, renowned in the audiophile world for its excellent performance and decoding capabilities. It supports high-resolution audio streams up to PCM 32bit 384kHz and DSD256 and contributes greatly to the richness and precision of the K9 Pro's sound. The THX-AAA 788+ amplifiers used in the K9 Pro provide detailed and dynamic sound with both high and low impedance headphones. The K9 Pro can produce up to 46Vpp of transients when driving high-impedance loads, and up to 2W without distortion when driving low-impedance loads. Compared to the previous model, the output power of the K9 Pro has increased by more than 50% with better heat dissipation efficiency.