Alesis M1 Active 520 Powered Studio Monitor Pair 5" low frequency woofer for clear bass and midrange, 3/4" tweeter for smooth, detailed highs without harshness Top mounted, integrated power switch/clip light bar Bi-amplified design: 25W to the tweeter and 50W to the woofer ensure extremely accurate studio mixing and monitoring Magnetically shielded for placement near TV and computer monitors XLR and 1/4" TRS input connectors with volume control, hi, mid and low frequency EQ boost switches and rear port design for deep bass extension and increased SPL 5" low frequency woofer for clear bass and midrange, 3/4" tweeter for smooth, detailed highs without harshness Top mounted, integrated power switch/clip light bar Bi-amplified design: 25W to the tweeter and 50W to the woofer ensure extremely accurate studio mixing and monitoring Magnetically shielded for placement near TV and computer monitors XLR and 1/4" TRS input connectors with volume control, hi, mid and low frequency EQ boost switches Rear port design for deep bass extension and increased SPL