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Review : Ultimate Ears (UE) Super.fi 4 and 4vi (iPhone version 4 vi)

I got a chance to spend a few days with the newly launched Ultimate Ears Super.Fi 4 vi, iPhone version of the also new Super.fi 4.

I tested my retail version against the UE’s own Metro.Fi and Shure SE210 – see what I thought about these designed for iPhone Earphones……