This is a Pi problem. Too much power hogging on too tiny a power connector with lots of I2R voltage drop.
Or it could be the peripherals connected to your Pi. Try using a single USB cable from the data (not power) USB-A jacks on your Pi to a powered USB hub, and plug your sound card, etc., into that instead of sucking power from the Pi.
Hope that helps.
Andrew, KA2DDO
author of YAAC?
and complainer about lousy Pi power supplies
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I keep getting a low voltage warning even after I changed power supplies and checked the voltage. Is this a YAAC problem or a pi problem.