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Linear Power Supply for Class D amps - Issues? Idle loss? Efficiency? Benefits?

Guddu

Major Contributor
Joined
Feb 10, 2020
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What are the issues in using linear power supply (transformer + bridge rectifier assembly etc.) with class D amplifiers?
Idle energy loss too high?
Efficiency?
Magnetic field interferences?
Price?

Almost every established traditional brand (like Denon, Marantz, etc.) used linear PSU in their class D amplifiers.
Are there any benefits to do this?
Head room?
Dynamic performance?

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