The tube ultragain is a preamplifier with integrated limiter for studio live and hard disk recording applications for tube like warmth and lowest noise performance that features a carefully selected 12ax7 vacuum tube with utc technology and behringer thus the mic100 is the ideal entry level for digital recorders and hard disk recording systems it is also the perfect complement for high quality condenser microphones also in the role as di box mic100 guarantees an excellent sound quality