Check the listing for details. Boss Katana Head Gen 3 100-watt Amplifier Head. Condition: New. Listed at 419.99 USD. The Katana’s Workhorse Head — Upgraded with Gen 3 Performance Equipped with evolved Tube Logic technology and a 5-inch internal speaker, the BOSS Katana Head Gen 3 delivers immaculate valve-inspired tone and comprehensive stage, studio, and practice functionality. This 100-watt amplifier head is equipped with a sweeping sonic arsenal of six amplifier voices (including a new Pushed voice), six voice variations, and the Gen 3 addition of a Bloom switch to sharpen up your sound. Next, five independent stompbox-inspired effects sections provide you with plenty of delay, reverb, and modulation options to sculpt your dream tone. Picky about your EQ? This Katana comes equipped with a powerful 3-band EQ, 3-way Contour control, and Presence control for serious studio-grade tone-shaping potential.