Designed for recording engineers who want an updated take on the classic '73-style unit, the Black Lion Audio B12A mkIII is a single-channel preamp with a warm, creamy, 1970s tone. It's suitable for recording vocals, keyboards, guitars, basses, and more. This preamp gives you a half-rack package, with an XLR connection for microphones and a 1/4" jack for line-level or Hi-Z instruments. The output connection is handled by the 1/4" TRS output on the rear of the unit.