A hybrid power supply uses a lower weight, more efficient switching power supply to perform most of the drop in voltage – say, from 120v AC to 15v DC – and then uses a linear power supply for the remaining much smaller drop, such as from 15v to 12v. These are becoming the preferred design in many modular synthesizer enclosures.
Shortcomings with the power supply – too noisy, or not enough – tend to be at the cause of many unexpected problems in modular synthesizers.
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