Used only once, in excellent condition. All functions have been tested and confirmed to be working. A MagSafe compatible case is also included. SHANLING UA4 HIFI Headphone Amplifier, Portable USB DAC AMP, MQA 16X, 768kHz, DSD512 Support, High Driving Power for Android/iOS/Mac/Windows, Dongle Volume Control, 3.5/4.4mm, Max 237mW@32Ω Output, High-Resolution Audio 【Excellent Sound】The UA4 is equipped with the flagship ES9069Q HiFi DAC, supporting up to 768kHz/32bit, 256DSD, and a maximum SNR of 120dB. 【Compact & Practical】The UA4 combines the best elements of the previous UA models, responding to users' demands for enhanced direct control of the DAC. By combining a 0.87-inch display and three hardware buttons, the DAC offers unparalleled control without the need for additional apps. 【MQA 16x Unfolding】The SHANLING UA4 MQA dongle employs MQA decoding technology, allowing for 16x playback of MQA audio files and streams in the Tidal app. 【Compatible with Many Systems】The UA4 portable USB DAC is compatible with various OS such as Android/iOS/Windows/Mac and can be connected to smartphones/computers/players for use. **********Note: The DAC requires a special cable compatible with iOS, such as the Shanling L3 cable. 【Android App Control】Connect the Eddict Player APP to adjust the volume, filter, gain, and sound channels on your Android smartphone. ****** This feature only applies to the Android platform. Dignis Lepic DAC Pocket DAC Headphone Magsafe Magnetic Elastic Storage Case BLACK