The ultimate multi-purpose SWR bass amp, with crushing volume, two killer effects and 750 watts of pure SWR tone. The top-of-the-line X Series amp, the 750x comes equipped with the classic SWR tube preamp, but also contains two onboard effects: the Subwave, which produces clean, pure and accurate sub-octave effects; and Overdrive, which affects the preamp's 12AX7 tube to create overdrive that can be as subtle as a classic "flip-top" or as nasty as a half-stack running at 11. It's quickly becoming an instant classic, and serves as the SWR amplifier of choice for many of today's professional rock bassists.