Glensound Top Hat M3 - Compact 4 input headphone amp with monitoring and loopsThe Top HAT M3 is a compact mixing headphone amplifier designed to provide flexible features for monitoring in an outside broadcast environment. Features: Two compact mixing headphone amplifiers Three outputs on each headphone amplifier Four inputs produce an individual mix per headphone amp Single talkback circuit Mic input has compressor limiter and is controlled via a sturdy front panel lever switch RJ45 connections for looping multiple Top HAT M3s