sxr71
1000+ Head-Fier
- Joined
- Apr 29, 2003
- Posts
- 1,239
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- 58
IMHO the best with the ER-4S is the LaRocco PR-II. The bass boost of that amp can make the ER-4S really sing. I know it isn't a purist thing to do, but those phones sound amazing on the go with just a little contouring of deep bass.