Perfect music enjoyment on the go? No problem. Where smartphones no longer have a headphone jack, dongles waste too much power, and Bluetooth still can't keep up in terms of sound quality, the FiiO Q11 comes to the rescue. As a portable DAC and headphone amplifier, it is your ideal companion for perfect sound quality, no matter where you are. Simply connect it to your smartphone, tablet, or computer - whether Android, Apple, or Windows doesn't matter - and dive into the music with your favorite headphones. With practically adjustable gain levels, the Q11 perfectly adapts to the impedance of your headphones, delivering crystal-clear sound on in-ear, on-ear, and over-ear models. With its 2600 mAh battery and over 13 hours of playback time, your listening experience is secured even on long train and car journeys, throughout the workday, or during day trips. It also features a sleek, elegant design. Perfectly fitting in your hand, transporting and operating it from your pocket is no problem at all. Whether you are at home or on the go, with the Q11, you can enjoy sharp sound everywhere. As part of its thoughtful design, the ambient light (illuminated window) on the front of the FiiO Q11 not only enhances its aesthetic appeal, making it a guaranteed eye-catcher for friends and colleagues, but it also displays the current sampling rate and DSD format with various color patterns. Treat yourself to relaxation on the go. Indulge in unique music enjoyment with the FiiO Q11.