The Rockerverb 50 has quickly become one of the most popular two-channel 50W amps around. New changes in 2010 for the MKII version included a Mid EQ control on the clean channel, an upgraded effects loop, a larger reverb with additional ECC83 preamp tube, and the inclusion of stock EL34 power tubes. Whether you go head or combo, this is all the amp you'll need to fill up any venue with satisfying crunch and distortion.