Firmware updates for Home AVR’s, PrePro’s, and Director amplifiers.

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Firmware updates are specific to each model Concert AVR, Maestro PrePro, and Director amplifier. Use the links below to find the firmware update for your specific product:

AVR’s and Pre/Pro’s

AVR-7

AVR-9

MAESTRO M9

MAESTRO M5

DIRECTOR AMPLIFIERS

D4600

D2800

DIRECTOR MATRIX AMPLIFIERS

M6800

M6400

M4800

M4840

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