From the focused punch of an American 6L6 to the juicy sag of a British EL84, power tubes play an important part in an amplifier's signature tone and response. And with the BOSS Nextone series, capturing the magic of four major output tube types is as easy as twisting a dial. These combo amps feature the latest iteration of BOSS's Tube Logic technology — the same building blocks from which BOSS's Katana and Blues Cube lines were built. In the Nextone Artist, every choice of output tube re-voices the entire circuit to perform more like your favorite classics. Breakup and bias, sparkle and sag — every type imparts its own characteristics, giving you cranked-up tube glory at bedroom listening levels.