The MESA® KT-88 STR 488 is the premium grade KT-88. Capable of delivering incredible power and fundamental punch, the STR 488 also offers the perfect blend of balanced midrange and high-frequency detail to punch and cut through any mix. Modern structural integrity combined with quality materials and workmanship produce a premium grade 88 that will enhance any KT-based amplifier, including our older Bass Prodigy and Bass Strategy bass amplifiers.