PreSonus Eris E44 Dual 4.5-inch Active MTM Studio Monitor (Single)
The PreSonus Eris E44 are front ported studio reference monitors, that have dual 4.5-inch drivers. The MTM stands for Midwoolfer, Tweeter, Midwoofer. MTM speakers are designed to offer an improved off-axis response, and a much better and smoother stereo image. The E44’s can be mounted horizontally or vertically.