Behringer TUBE ULTRAGAIN MIC100 Vacuum Tube Preampifier with Limiter The TUBE ULTRAGAIN MIC100 is a vacuum tube mic/line preamplifier with integrated limiter for studio, live and hard disk recording applications. It features a carefully selected 12AX7 vacuum tube with UTC technology for exceptional warmth and lowest noise. Thus, the MIC100 can be used to eliminate the "dull" sound of standard digital recorders and sound cards. Also, it perfectly complements studio-grade condenser microphones. When used as a high-end DI-box, it ensures outstanding signal integrity. The TUBE ULTRAGAIN MIC100 comes with phase reverse switch, +48 V phantom power and 20 dB pad. Balanced inputs and outputs provide the finishing touch.