FiiO equipped the K15 with a professionally designed discrete class AB headphone amplifier circuit. Features OPAMPs + transistor design for current amplification. The K15 contains a pair of ON Semiconductor MJE243G/253G chips that provide high current gain and low impedance. This setting produces a powerful output that reaches up to 3W per channel. With such an extremely powerful output, the FiiO K15 easily drives full-sized headphones. Its low impedance makes it compatible with high-sensitivity IEMs. We also have five-level adjustable gain for easy pairing with low and high sensitivity audio equipment.
The FiiO K15 is a very versatile device that can be used in multiple scenarios. This includes using the device as a USB DAC, wireless Bluetooth DAC, headphone amplifier, network streamer, local playback and a complete all-in-one solution. We're pretty sure the FiiO K15 will fit any setup perfectly.