Used SWR SM-400 Tube Bass Amp Head

Used SWR SM-400 tube bass amp head in fair condition, delivering the classic SWR punch with warm, responsive tone. Rated at 400W bridged mono (approx. 240W per side stereo) with a hybrid preamp and flexible EQ for shaping everything from tight modern lows to vintage grit. Features include dual channels, effects loop, DI output, and 2/4/8-ohm operation. Expect cosmetic wear and signs of use, but a proven, gig-ready workhorse sound.