浏览EBay的时候看到了这个。 http://www.ebay.com/itm/PIONEER-RG-2-DYNAMIC-RANGE-PROCESSOR-SP
有点好奇，加个这个能提升音乐效果么？
"Modern recording uses three dynamic control techniques which may detract
from the original dynamic range; reduction of transient peaks, overall
compression of loud levels and upward manipulation of soft levels.
The RG-2 will correct dynamic distortion in each of these areas, increasing
the contrast and virtually restoring the original live program."
