The 6L6 Viceroy is biased deeply into Class A, yielding a pushed, ready-to-jump feel. The vibe from The Viceroy is explosive and forward-tilting. It distorts very well in a large curd Tweedish way when cranked. The clean tone is gorgeous and dimensional. The 1x12 is wonderfully compact.
Features include reverb, two power levels (33 or 7 watts), variable drive control (internal clean boost which gives the amp more push and OD when the amp is turned up - you can hear more of the winding on strings and dynamic, super twang), lastly a footswitchable fixed boost (partial tone stack bypass), which greatly increases midrange punch and yields a wonderful grind - the volume increase is just right for a solo or if the amp is really overdriving it thickens and adds sustain (lighted footswitch included).
Controls include volume, treble, mid (with panel on/off for boost), bass, reverb, drive, and power level.