Xuelin H7 DAC uses two ES9038Q2M chips, which are the mobile version of the flagship DAC chip ES9038s, but their architectures are the same, and its indicators are better than AK4490, AK4493, and other chips. ESS9038Q2M provides 129dB S/N and 120dBTHD +N, better in dynamic range and ultra-low distortion. The USB interface is the SA9227 asynchronous clock, which is the best solution for USB decoding at present. It guarantees the accuracy of the data from the digital source, and its parameters are better than the single clock solution. On the analog side, the opa2134 + ad8397 pair of classic HiFi op-amps used by Xuelin H7. H7 built-in 2900mAh lithium battery does not rely on mobile phone power and does not need to worry about power consumption.
Different from ordinary aluminum profiles, H7 is made of full CNC aluminum alloy shells and double-sided 2.5D glass, without considering shell cost. And its size is 80x80x17mm, even if you get it in your hand, it is also very attractive.
Xuelin has invested a lot of software development work on H7 DAC for 1.5 years, to make sure the software can be so detailed and multifunctional. To fulfill the following functions:
USB connection detection,
Real-time electricity detection,
Charge insertion detection,
Low power protection,
Screen saver and wake up,
Real-time bitrate detection and display of files,
Filter selection and setup,
Global volume control and display,
Software startup and shutdown,
Earphone impedance detection,
Automatic power matching
112mW@150Ohm (3.5mm SE), 448mw(2.5mm Balanced )
154mW@300Ohm (3.5mm SE), 598mw(2.5mm Balanced )