Check the listing for details. Hohner Rocket Amp Harmonica - A Major. Condition: New. Listed at 71.49 USD. Have Your Harmonica Heard! Need more presence onstage for your harmonica to cut through busy mixes and reach all corners of the venue? Sweetwater has your solution! The Rocket Amp harmonica takes the legendary sound design of Hohner harmonicas and adds a cover that’s specifically designed with closed sides to channel the tone and attack of every note you play right into your stage microphone. It’s incredibly ergonomic to hold and is guaranteed to skyrocket the impact of your live performances. Best of all, the Rocket Amp harmonica is available in seven major keys to accommodate every song and set list you’re working with, including A, Bb, C, D, E, F, and G models. You’ll also get a protective case for your instrument for safe storage and security while out on the road.