Pros: BASS! Very deep and impactful but still clean, great soundstage, very good build quality, fast turnaround time
Cons: Although fairly neutral, mids will seem too recessed for some users, and highs are sometimes harsh and sibilant
http://www.head-fi.org/forum/thread/552996/review-westone-ac2-dual-driver-custom-in-ear-monitor See above for my in depth review. In general, the Westone AC2 is a great addition to the somewhat crowded entry level custom IEM market. It has its own flavor that will surely please some people. What would be the point if Westone just released another UE4pro/LiveWires sounding custom, at the same price? We already have those.