When tuning the Aspire 4 for live performance monitoring, the engineers at 64 Audio asked themselves: do we make a highly accurate unforgiving studio monitor or a contoured device that helps musicians hear themselves more effectively? As with many monitoring tools the answer is somewhere in the middle. Huge bass that can reproduce some of the toughest frequencies in the audible spectrum with quick ease. Forward mids that are precisely elevated for articulation in the most vital region of instruments and voices. Plenty of top end sparkle separates Aspire 4 from any other UIEM in its class, making this powerful sound signature a perfect blend of accuracy and musicality.

Since 2010 64 Audio has crafted thousands of custom in-ear monitors for some of the world's greatest musical talent. Working with these discerning and critical entertainers has shaped their products and technological development, culminating in Aspire 4, 64 Audio's most accessible UIEM to date. Sharing that same legendary DNA and patented technology, Aspire 4 is the ultimate UIEM for anyone who needs to hear like a pro.