I know that McIntosh Power Guard was first introduced after the demise of the original McIntosh tube equipment. Power Guard has been used in all the solid state amplifiers since introduction. It is a wonderful innovation and has saved many speaker drivers from destruction!
However, I notice that the “newer” tube amplifiers (MC 2000, MC 2102, MA 2275) do not have Power Guard, even though they sport more recent refinements such as wireless remote control, power control, data ports, external sensor inputs, etc.
Is this because of the inherently higher distortion levels of the tube amps? Or is it because the tube amps utilize transformers vs. autoformers. Is there another reason? Maybe Ron-C or someone else knowledgeable about the Power Guard circuitry could shed some light on this for me.
Thanks!
VintageMac
However, I notice that the “newer” tube amplifiers (MC 2000, MC 2102, MA 2275) do not have Power Guard, even though they sport more recent refinements such as wireless remote control, power control, data ports, external sensor inputs, etc.
Is this because of the inherently higher distortion levels of the tube amps? Or is it because the tube amps utilize transformers vs. autoformers. Is there another reason? Maybe Ron-C or someone else knowledgeable about the Power Guard circuitry could shed some light on this for me.
Thanks!
VintageMac