Topping D50 vs the "Big Boys"

grannyring - don't know what you are reading about " Many units just don’t work or work properly.  DOA or after a week or so." 
Amazon compilation summary from  2 smaller groups of review : 

Impressive - 5 stars

computer audio bliss - 5 stars

Great DAC for a PC based audio system - 5 stars

Took my listening to a different level - 5 stars

Really, really clean audio - 5 stars

I love this little thing. - 5 stars

Blew my mind - 5 stars

Five Stars - - 5 stars

very digital- flare esc sound - 1 star

Hit's above it's weight - 5 stars

BEST DAC I HAVE HEARD UNDER 1200 DOLLARS...Schitt included - 5 stars

Fantastic and versatile DAC 5 stars

Sounds great - 4 stars

Great Value Dac 5 stars

Distorted broken sound 1 star

Small, runs cool, pristine, perfect for my needs. 5 stars

Excellent sound quality 5 stars

USB works with PC, but no joy with iOS - 3 stars

Dead on Arrival Hoping I can send back for a refund! 1 star

Another group of reviews - 

****95 reviews 4 out of 5 star total average***

Yes I own one and think its a steal......WOW biased against it??

https://www.amazon.com/TOPPING-D50-HIFI-ES9038Q2M2-DAC/dp/B006GJ2SK4/ref=sr_1_5?keywords=topping+d50&qid=1565937849&s=gateway&sr=8-5

https://www.amazon.com/Dilvpoetry-TOPPING-Decoding-ES9038Q2M-Amplifier/dp/B07BGTHF79/ref=sr_1_4?keywords=topping+d50&qid=1565937849&s=gateway&sr=8-4

https://www.amazon.com/TOPPING-ES9038Q2M2-DSD512-768KHz-Decoder/dp/B07BQTFWW1/ref=sr_1_3?keywords=topping+d50&qid=1565937849&s=gateway&sr=8-3

@d2girls
”what does sound have to do with anything, i was talking about the build quality”

This comment might be construed by some as a bit of a disconnect. I’m not trying to be inconsiderate but how can you possibly make a determination on build quality? You haven’t heard the dacs you mention and you are passing judgement on build quality based on internet photos or the opinions of others on the net? Are you saying dacs made only of milled aluminum cases can be good?