nautikal
100+ Head-Fier
- Joined
- Dec 28, 2006
- Posts
- 359
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The only other options I know of would be the XM4, Xin, portafile, go vibe, ibasso, mSEED, and Corda MKIII. Check out skylab's 20 portable amp review here. http://www.head-fi.org/forums/showthread.php?t=216903