The Ace is an excellent sounding iem that boasts nicely extended bass, intimate midrange and smooth treble. The vocals are expressed effortlessly with naturalness and it provides an alluring listen. It has great holographic soundstage and there is a spacious feeling. In addition, it has versatility with its switches for 4 different sound signatures. The Aroma Ace is one of the best flagship iems in the market with its impeccable sonic performance.