The Topping D90SE is a high-performance digital-to-analog converter (DAC) that offers advanced features and impressive specifications. It is designed to deliver high-resolution audio playback with low distortion and excellent dynamic range. The device supports various digital audio formats and features both USB and optical/coaxial inputs, allowing for versatility in connecting to different audio sources. It utilizes dual AKM AK4499EQ DAC chips for enhanced sound quality and lower noise levels. The D90SE is equipped with a powerful hardware volume control and includes an OLED display for easy monitoring of settings. The output stage features both balanced XLR and unbalanced RCA outputs, designed to cater to different audio setups. Additionally, the D90SE supports Bluetooth connectivity, making it easy to stream audio wirelessly from compatible devices. Its compact design and build quality make it a suitable choice for audio enthusiasts seeking to upgrade their digital playback systems.