Very happy with this preamp. I had Topping d50 III directly connected to amplifier audiophonics S450 ET purify chip . When i connected in the chain the Aiyima T20 i could listen to music at a low volume and all the words were clear, musical, excellent . The bass also got a bit tighter and a little louder (i am speaking here the output rca ffrom T20 goes to my subs) and the xlr goes to the amp . Very very satisfied and happy