Black Lion Audio B12A MK3 Classic American 312-Style Mic Pre and DIDesigned 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