Desktop/portable dual power supplies

The M15S is able to automatically recognize when fast charging* through USB is being used and automatically switches to use the highest-voltage power supply, leading to an increase of 26.67% in power supply for even more power output. Even when not using the fast-charging adapter, the M15S can still automatically switch to a higher-voltage power supply that is enough to drive most headphones.

High-performance ES9038PRO DAC

The full, uncut desktop ES9038PRO DAC chip with eight independent D/A converters is employed in the M15S. Each channel uses four D/A converters in parallel to form a fully differential output, for a truly rich and highly resolving sound.

Five gain levels

Low/medium/high/over-ear headphone gain under battery power

Enhanced over-ear headphone gain under USB power

Six operating modes including Roon Ready

Pure Music mode: FiiO exclusive mode, for immersive music

Android mode: Freely use third-party apps, including those of streaming services

AirPlay mode: wirelessly connect to iOS devices like iPhone/iPad, with a sound quality boost

Roon Ready mode*: Roon Ready certified, for serious music lovers

USB DAC mode: acts as a DAC when connected to a computer/phone, for greatly improved sound

Bluetooth receiver mode: supports SBC, AAC, aptX, aptX HD, aptX LL, LDAC, and aptX Adaptive, for convenient quality wireless sound

Qualcomm 660+Android 10

With the stable and smooth combination of the Qualcomm Snapdragon 660 and Android 10, you can start listening quickly with the M15S. With the ability to freely install third-party apps and with no global SRC, you can be sure to listen to the music you want in the highest quality.

SBC/AAC/aptX/aptX HD/LDAC 2-way Bluetooth

Bluetooth 5.0 supported transmission: SBC, AAC, aptX, aptX HD, LDAC, LHDC Bluetooth 5.0 supported reception: SBC, AAC, aptX, aptX HD, aptX LL, LDAC, aptX Adaptive