Feature: 1. THX AAA technology provides highest fidelity audio and maximum dynamic range to support power-hungry, audiophile grade headphones, you can enjoy satisfyingly loud volumes and ultra-clean sound. 2. Master Quality Authenticated(MQA) renderer can reproduce digital master-level sound quality from services such as Tidal or USB Audio Player Pro, and reveal every detail of the recording. 3. The ES9281PRO digital-to-analog converter provides larger dynamic range and less distortion, with direct rendering of MQA files in the DAC. Enjoy the studio sound quality of Tidal Master Quality files. 4. THX Onyx compatible with most USB/USB-C ports and works on Android, iOS, Windows 10, and Mac without the need for any drivers or installation. 5. A built-in magnetic clasp enables quick and convenient cable management, ensuring there are no messy headphone wires dangling around. Specification: Features: THX AAA technology provides highest fidelity audio and maximum dynamic range to support power-hungry, audiophile grade headphones, you can enjoy satisfyingly loud volumes and ultra-clean sound. Master Quality Authenticated(MQA) renderer can reproduce digital master-level sound quality from services such as Tidal or USB Audio Player Pro, and reveal every detail of the recording. The ES9281PRO digital-to-analog converter provides larger dynamic range and less distortion, with direct rendering of MQA files in the DAC. Enjoy the studio sound quality of Tidal Master Quality files. THX Onyx compatible with most USB/USB-C ports and works on Android, iOS, Windows 10, and Mac without the need for any drivers or installation. A built-in magnetic clasp enables quick and convenient cable management, ensuring there are no messy headphone wires dangling around. Specification: Name: Headphone amplifier Input Type: USB-C or USB(via included adapter) Output Type: 3.5mm analog jack Headphone Impedance Range: 22-1000 Ohm Output Impedance: 0.25 Ohm Dynamic Range: 118dB Sound Quality(THD+N, 1kHz): -110dB Output Power: 180mW(Per channel, 22Ω, <1% THD+N) MQA Play: Yes Headset Mic Support: Yes(Use with iOS products is for multimedia playing only, no call or mic function) USB&DAC Configuration: ESS ES9281PRO AMP Configuration: THX AAA-78 Compatible Platforms: Android, iOS, Windows 10, and Mac( USB-C to Lightning adapter is not included) Packing list: 1 * Headphone Amplifier 1 * USB-C to USB-A Adapter Package List: 1 * Headphone Amplifier 1 * USB-C to USB-A Adapter