Я кривовато выразился, сорри... Конечно не редуктор (в смысле "понижатель")
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, скорее "стабилизатор" демпинг-фактора, поддерживающий его на высоком уровне на полосе частот...
В общем, вот:
Linear Damping Level variations due to high amp impedance tend to reduce an amplifier"s damping factor, and frequency variations cause it to fluctuate. This circuit cancels the effect of these variations, maintaining a high, stable damping factor, for superior articulation of all sounds and better frequency response.
Yamaha"s Linear Damping maintains a high, stable damping factor even at frequencies from 10 to 20000 Hz, where it generally tends to fall off. The result is superior articulation of all sounds.