Hello, I am an audiophile from China. Just call me Sam. I have paid attention to Head-Fi and gained a lot of information so I think is a pleasure and a good oppurtunity to discuss hifi issues with you guys here. Until today I joined here. Although I am still grade 12 students, currently I own...

I am a new newcomer of head-fi. And I am an audiophile from China. I may be not quite good at English. Recently I have purchased HD650, and I am using HiFiman HM603 as the source. But the sound was not powerful enough to open the range of the sound field of HD650. I am thinking about...