Hello HeadFi, this is my first review of audio gear. I have recieved this OpAmp for free from Burson Audio themselves. The only cost I had to pay was the customs for shipping this item to my country. The only device that I have put this OpAmp into is a Zishan Z3. The Zishan Z3 was equipped with a OPA2228PA OpAmp before I replaced this OpAmp with the V5i-D. As soon as I turned the device on the increased soundstage and clean midrange was noticeable. The Zishan Z3 has suddenly become a super clean and powerful audio device. Clean like a good USB-C...