Hello Everyone, Thanks god that let me joined the 6xx drop, now i'm searching for the right Dac and Amp to juice up the headphones to the best sound quality i can get from them, in a reasonable price. So i look in the internet, and it weren't so much hard to see that most of the people speaking and recommend this two products by companies, that made every product, hand made with one ideal "To make A Great and a clear Sound, Simple product without bull****, and in reasonable price". So i still didn't decided which one is the best for me. Zeus reviews confuse me, and i just wanted to know: What are the difference? What are each product, pros and cons? Which one is the best to pair up with my hd 6xx? Are there other options that i should look up to, for my 6xx? Thank for your help P.S My laptop is Win10, I heard that some of the product, have compatibility problem with win 10. EDIT: ive added Audio-GD NFB-11, after deep looking in this product.