Head comes equipped with a 6v6 power section that can be swapped out for a 6l6 if that’s your taste. Cab is homemade intended for a 15” speaker. An inner baffle was made to fit a 12” speaker. It can be removed if you wish to replace the 12 with a 15. The cab is equipped with a vintage Celestion G12s-50 16ohm speaker that are hard to come by anymore. Amp goes clean to edge of breakup without the boost engaged. With the boost engaged it gets crunchy past half.