PreSonus Eris 4.5 High Definition 2-Way 4.5-Inch Near-field Studio Monitors Bundle with Two Instrument Cables, and Polishing Cloth - Pair 4.5-inch Kevlar LF transducer + 1-inch low mass silk dome HF transducer Ideal for home studios mixing and mastering as a replacement for your 'computer' speakers 3-position Low Cut switch Acoustic Space switch let you properly integrate your Eris monitors into your specific setup TRS & RCA rear inputs, 1/4-inch front aux input