I've done it and it does seem to improve the quality. I was skeptical at first so I used my hacked player that I didn't mind trying it out on. The sound was clearer with less background noise. If you do decide to try it, just be sure and follow the instructions from the first post.
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 ops: 1GB Black Hacked Chipod ops:
2 GB Black Temptation Player 
8) WHITE MEIZU M6 8GB 8) |