Tech 21 has two, multi-function, 60-watt powered extension cabinets: the Power Engine 60, that matches their Trademark 60 combo amp, and the Power Engine 60T, the match for the Bronzewood 60 dual-channel acoustic combo amp. These are self-powered, 1x12 cabinets that can be used with any guitar pre-amp or active direct recording device. Engineered with ground-independent inputs, multiple Power Engines can be added to double or triple your stage volume or as a second cabinet for stereo rigs. Features include: individual level control; 3-band active EQ; 1/4 inch jacks as well as balanced XLR inputs and outputs. Retail prices are $395 for the Power Engine 60 and $425 for the Power Engine 60T that has an additional high-frequency horn.