Sparkos 3602 Op Amps + Aiyima A70: DIY Install and Review

In this video I show you how to replace the op-amps in a Aiyima A70 and I then give a detailed before and after subjective review. I also weigh in on the finished upgraded combo and:
Does this amp now pass into the realm of HiFi or does it still miss the mark! Does it compete against higher priced tube based HiFi gear? Watch the video to find out!
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