FiiO M15S - MP3 Spieler

When the M15S is in the dedicated "desktop" mode and under "USB fast charging", it will essentially transform into a desktop device and operate completely without a battery. In other words, the battery will neither be charged nor drained in this mode, which prevents early degradation of the battery. The M15S not only has the "desktop/portable dual power supplies" seen in other FiiO products, it is also equipped with an automatic "auxiliary DC power supply" - the M15s is able to automatically recognize when "USB fast charging" is activated and then it automatically switches to the best power supply, leading to a 26.67% increase in output power. In this way, you have a very good portable source and amplifier that can also be used in a stationary setup.

Flexibility

The M15s can be adjusted with five levels of gain. When the battery is used, you can choose between: low, medium, high and over-ear headphone mode. When connected to USB power, the 'enhanced over-ear headphone' amplification level is also available, enabling undistorted output power of up to 1200mW per channel, more than enough to drive a variety of different earbuds and headphones.

Included, you get 6 different operational modes:

Android Mode: Download and use your favorite apps: (Tidal, Qobuz, Spotify, Youtube etc.).

Pure Music Mode: Use FiiO's own music player where you can, among other things, play downloaded files.

USB DAC Mode: Receive digital signals from Tablet, Mobile, Computer. Very responsive mtp for movies and gaming.

Bluetooth Reciever Mode: Supports LDAC/SBC/AAC/aptX/aptX HD/aptX LL/aptX adaptive for receiving bluetooth signals.

Airplay Mode: Receive signals wirelessly from Apple products.

Roon Ready Mode: Roon Ready certified.

The device can both send and receive bluetooth signals. It supports micro-SD cards up to 2TB and 2.4G/5G Wi-Fi connection.