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RE: Single PSU or dual mono best in amps??

Posted by Thomas Mayer (M) on June 18, 2012 at 10:32:18

In Reply to: Single PSU or dual mono best in amps?? posted by andy evans on June 18, 2012 at 09:42:03:

Hi Andy,

this is a question which cannot be generally answered since many factors play a role. Different circuit topologies which are fed by the PSU will respond differently.

Also important how the channels and different stages are decoupled.

IME if there is sufficient decoupling between channels and stages, separate supplies bring little benefit.

Here are my preferences:

If space and budget is limited, use a single PSU for both channels and all stages. Ensure good decoupling, ideally separate LC stages for each channel and stage.

If more budget is available and also the required space, implement separate PSUs for driver and output stage.

Still more budget available, then go for all separate PSUs.

Also note that a single PSU, with top quality power transformer, properly designed and well decoupled will be superior to separate PSUs with low quality.

Best regards

Thomas

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