Sony STR-DB2000 Inside Look

The Sony STR-DB2000 is a highly complex piece of electronic engineering requiring qualified and experienced engineers to repair it. The printed circuit board density is high and the main power amplifier board is on the base, which means having to remove all the boards above it to gain access. On first impression, we can see that this digital amplifier relies heavily on dedicated power supply circuitry and voltage regulators. Unlike analogue amplifiers that require a heavy transformer to produce the energy reserves for the power amplifier stage, this digital amplifier uses switched-mode power supply design to produce the necessary voltage rails.

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