Many of Carr's amplifiers have switchable power outputs, adding to their versatility, according to professional reviews.
Carr Amplifier models include:
Vincent (7/33 watts, two 6L6, one 12AT7, and three 12AX7 tubes, and a 12" Eminence speaker)
Rambler (30 watts, two Svetlana 6L6 tubes and a 12" Weber speaker)
Slant 6V (18/22/40 watts, four 6L6, four 12AX7, and four 12AT7 tubes, and a 12" Eminence speaker)
Mercury (1/10-8 watts, one EL34 or KT66, one 12AT7, and two 12AX7 tubes, and a 12" Carr Kingpin speaker)