Fryette Amplification ZMACS Impedance Matching Amp & Cab Selector

Fryette Amplification introduces ZMACS, the world’s first and only selectable and programmable Impedance Matching Amp & Cab Selector! Multiple amplifier and speaker cabinet selector systems have been around for decades and offer a wide variety of features and functions. Yet, in all that time, not one of these products has been designed to address the single most important application question surrounding mixing and matching tube amps and speakers: “It is safe to mismatch the impedance of my prized vintage amps and cabs?” Most vacuum tube guitar amplifiers require that the user manually set the amplifier output impedance to match the impedance of the speaker cabinet. Moreover, tube amplifiers require connection to a specific impedance load to operate properly, maintain tone and avoid damage to the output tubes and transformer. Today’s users own a wide variety of vintage and modern vacuum tube amplifiers, all of which exhibit lesser or greater degrees of sensitivity to their applied