Mesa Boogie Studio Preamp 1991

The Mesa Boogie Studio Preamp, released in the early '90s, is a rackmount tube preamp known for packing Mesa’s legendary Mark Series tone into a compact 1U format. Built around five 12AX7 tubes, it delivers lush cleans and saturated high-gain lead tones with the signature midrange punch and articulation of its big brothers like the Mark IIC+. It features independent rhythm and lead channels, a 5-band graphic EQ, and a built-in effects loop—making it a studio and stage weapon for guitarists chasing that classic Boogie grind. The 1991 version is especially prized for its hand-wired quality and raw, vintage character.