loud pops after last firmware and mcu update

[Wei Cao]

This occurs when the dac goes to sleep when usb is unplugged and when my MacBook goes to sleep with usb plugged in.

anyone else experiencing this problem and / or have a solution? 

Would it be possible to degrade the MCU and XMOS firmware, I'd rather have the wrong filters than those loud pops that are dangerous for my speakers

Dear Koen,
Sorry for the inconvenience, please stop to use the DAC temporaryly.
We will try to reproduce your issues and fix it .
Please use the XMOS and MCU firmwares by the following links:

MCU v2.5 and XMOS v3.01:
https://www.matrix-digi.com/en/news/20191011428.html
MCU v2.7
https://www.matrix-digi.com/en/news/20191217441.html