For sale the Yorkville XS400H 400W Bass Head. Tube in Preamp replaced with a JJ - ECC83S tube to fatten sound and add clarity. A Wet/Dry balance control lets you blend the exact proportions of clean and overdriven signal you want. The switchable limiter and compressor have user-definable threshold control for even more shaping possibilities. 5-band equalizer with semi-parametric mid with user-definable frequency is improved for better sound control. Amazing sound. The tube feature it's the best one because it fattens your sound without getting it muddy. The Scoop can help you bring out that high end used for funk. If you want to sound as good as an SWR or Ampeg and save your money do yourself a favor and go get one. No trades, cash only.