The Blackbird was designed to capture all the classic sound of the early 60's Blackface Deluxe Reverb without the brittle high end and flabby lows that can ruin an otherwise wonderful sound. Think of "The Blackbird" as the best sounding Deluxe Reverb you have never heard! The Blackbird will help you capture the magic you have been looking for and will never find in your old blackface amp. Output Power - 20 watt model = (2 x 6V6 power tubes), 30 watt model = (4 x 6V6 power tubes) 40 watt model = (2 x 6L6 power tubes) Tube Complement - (2) 12AX7(preamp/reverb recovery) - (2) 12AT7(reverb driver/phase invertor) (1) GZ34(rect. tube). Class - AB push-pull with adjustable fixed bias. Front Panel Layout & Equalization - Volume, Reverb, Treble, Bass, Middle Size and Weight - 1x12 Combo - 19 3/4"W x 17.5"H x 10"D, 35 lbs.