外國評論係呢部JDSLabs C421 全面勝出
Comparison to the Ibasso D-Zero
The C421 is a clear step up from the D-Zero in terms of sound quality. The D-Zero may be the better value amp as it comes with a USB DAC for $109. However, if judging solely from the sound quality, I would go for the C421 clearly for the superior midrange, an overall better treble/midrange/bass balance, and most of all the superior soundstage.
http://www.headfonia.com/flyin-high-jdslabs-c421/3/