I asked Allen Liang a few additional questions regarding the CDNSE Newstar DR111 and here are his answers:
Is there any way to look at SNR or rx stats of a DRM station?
No, we did not include SNR display since it is less useful for the average user. Users can review the status by pressing INFO key while listening to the DRM.
Is there any way to adjust the aggressiveness of the DSP for AM?
You can adjust AM bandwidth by Press and Hold CLOCK key while listening to AM, then yes up or down to adjust.
Will firmware upgrade be available via the USB or SD?
Yes, you can upgrade the receiver by USB or SD.