“Latest Firmware Update for FiiO K9 USB DAC Headphone Amplifiers – Improve Sound Quality for K9, K9 Pro ESS, and K9 Pro LTD Models”
2023-05-15 01:00:00 「K9 Pro LTD」 Emirai will update the firmware for the three models of the FiiO brand USB DAC built-in headphone amplifier “K9”, “K9 Pro ESS” and “K9 Pro LTD” with the aim of improving quality. Updates are free. 「K9 Pro ESS」 In the new farm, PEQ function is added to K9 Pro ESS/K9 … Read more