ADV.Sound M4 IEM Review

Cinder has posted a review of the $40 M4 IEM on Head-Fi.

Summary:

Pros: Good mids reproduction, excellent treble extension and retrieval, braided cable, aluminum chassis, female vocal presentation
Cons: Almost no bass, squished eartips. prone to distortion is busy songs

Review of the M4

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ADV.Sound M4 Review

HiFiChris has a review on Head-Fi of the new entry from ADV.Sound.  It is the new M4 dynamic driver IEM priced at under $40.

Summary:

Pros: excellent cable, small size, precise soundstage, very fair price, adequate resolution

Cons: bass could be slightly more arid, not for treble-shy people, no chin-slider

Review of the M4