Mcintosh mc-255

Why is the mc-255 amp considered a class g amp. Is class g better than a mac amp with the autoformers.

bernardwilliams11-28-2022 9:07pm

jasonbourne52 Details Discussions Posts This discussion Message User 2,863 posts 11-28-2022 at 10:52pm Copy Comment URL Report Comment Edit Delete Class G is an amplifier operating system. The output stage it is connected to can be Class A (single device), Class A (multiple devices) or Class AB (multiple devices). Class G switches the rail voltages to the output stage from low voltage to higher voltage for musical peaks where power/watts are needed to avoid clipping distortion.
jasonbourne52 Details Discussions Posts This discussion Message User 2,863 posts 11-28-2022 at 10:58pm Copy Comment URL Report Comment Edit Delete Class G allows an amplifier to have temporarily more power on music peaks and remain within weight constraints (more capacitance). Imagine how big and heavy a McIntosh 5 to 7 channel home theater amp would be with 5 to 7 autoformers!
jasonbourne52 Details Discussions Posts This discussion Message User 2,863 posts 11-28-2022 at 11:04pm Copy Comment URL Report Comment Edit Delete Class G is not new! It has been around since the late 70's. Soundcraftsman I believe was the first to market this design.