FiiO JM21 with a Qualcomm Snapdragon 680 processor, which is based on a 6nm architecture and features 8 cores with a clock speed of up to 2.4GHz. This top combination ensures extremely fast response and smooth navigation through menus. The device is powered by a specially optimized Android 13 operating system, allowing you to freely install all well-known streaming apps such as TIDAL, Qobuz, Apple Music, and Spotify. Thanks to the advanced DAPS system, the player completely bypasses the universal SRC conversion of Android, ensuring that every file or streaming track is played back at its original, native sampling rate without any loss of quality.

Despite its extremely slim profile, the FiiO JM21 hides huge energy reserves inside, delivering up to an impressive 700mW + 700mW at 32Ω through the balanced 4.4 mm output. This power allows it to drive even large high-impedance over-ear headphones with absolute ease and dynamics, while simultaneously maintaining the required delicacy for sensitive in-ear monitors (IEMs). To achieve the perfect fit with every headphone in your collection, the player incorporates three gain levels (low, medium, high). Each gain level is accompanied by a carefully designed and calibrated volume curve, offering exemplary control and eliminating ambient noise.

The wireless networking of the FiiO JM21 is at the highest possible level thanks to the integration of bidirectional Bluetooth 5.0. The device can operate both as a transmitter and as a receiver of high-definition signals, supporting all advanced protocols on the market. In transmission mode, it is compatible with the top codecs LDAC, LHDC, aptX HD, aptX, and AAC, ensuring a wireless listening experience that rivals wired connections. In receiving mode, it supports LDAC and AAC, allowing you to send high-quality audio from your smartphone or tablet directly to the player, taking advantage of the device's superior DAC circuitry.