The current compatible amps: Positive Grid Spark: Spark 40, Spark MINI, Spark Go, Spark Live, Spark 2 Boss KATANA: KATANA 50 MkI & MkII & Gen3 and better models, KATANA AIR & EX, KATANA GO Yamaha THR-II: THR10II, THR10II-WL, THR30II, THR30IIA Yamaha THR-I: THR5, THR5A, THR10, THR10C, THR10X Fender Mustang: Micro Plus, LT25, LT40S, LT50 Marshall Code: Code 25, Code 50, Code 100, Code 100H