My Topping D50 arrived on Friday. Amazingly compact yet weighs 480g (see pics). The SQ is shockingly good. Though I need to listen to the system with it installed for a longer session to get a sense of its overall SQ, preliminary listening suggests it processes Redbook CD digital audio with better frequency response extension and control than my beloved R2R Theta DSPro Basic IIIa DAC. Battery-powered, with the DAC set for max output.
https://photos.app.goo.gl/chLj3WdJiSAu5Kid6
https://photos.app.goo.gl/chLj3WdJiSAu5Kid6