Accuphase E-600 - AAVA Re-designed for Low Noise

AAVA is re-designed to achieve low noise.
AAVA in E-600 achieves low noise by the paralleled
buffer amplifier and paralleled V-I converter in larger two
units.
Then the input stage of power amplifier is low-noised.
As a result, the overall noise of E-600 is 56%(-5dB) of E-
560.
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