FiiO  E10K-TC   Headphone Amplifier USB DAC Type-C coaxial Black 384kHz/32bit 

• Simple, pure, and convenient to play:The refined E10K-TC amplifier is mini enough to carry with you wherever you go, but is also right at home on your desk to make your music sound great anywhere. The small yet easy to operate design makes it a perfect companion for listening. It is easy to be used.
• XMOS decoding and quality chips to delight your ears: The E10K-TC DAC comes with the flagship XMOS XUF208 for better USB decoding. Compared to the original E10K, the USB Audio class has been upgraded to 2.0 and PCM is now supported up to 32 bit/384kHz sampling rates to better capture the details in your music.The amplifier is the LMH6643, ensuring good output power with great transient response.
• The specifications for the good device :(1)Power source: Standard USB Type-C connector ; (2)Output power: 219mW/32Ω ;(3)Sampling Rate (USB decoding): Up to 384kHz/32bit ; (4) Signal-to-noise ratio: ≥114dB ; (5) Coaxial output: Up to 192kHz/24bit ; (6）Frequency response: 20Hz~20kHz ; (7) Headphone impedance (recommended): 16Ω~150Ω ; (8)Dimensions: 79mm×49.1mm×21mm; (9)Weight: 78g
• 2 gain levels and BASS boost: The portable E10K-TC amp comes with high/low gain adjustment as well as bass boost. High gain is for higher impedance headphones that may need the extra volume, while the bass boost satisfies different listeners' preference when listening to various types of music.
• Unbelievably low noise floor : Optimized active low-pass and BASS circuit designs ensure lower noise floor in any situation, so your music is truly played back faithfully. The USB Type-C connector gives the device more compatibility. At the same time, the headphone/line/coaxial (up to 24 bit/192kHz) outputs make it easier to connect to other equipment.