朋友帮做的一个耳放，第三代试验机，自制变压器，电容都是日本nichinon以及德国wima，推我的ER4S高频提升明显，层次比电脑直推强太多了。
I'm Bo Zhou(周波), working in Autodesk, worked for Autodesk Showcase, now developing Autodesk Mudbox. I'm working at home, my hometown city is Nanking.
