I have a piano keyboard that has headphones input. When I connect headphones that have microphone they don't work well, but when I connect headphones that haven't microphone they work perfectly. Is
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UMOMO 88 Key Digital Piano Full Size Electric Keyboard w/Music Stand+Power Adapter+3-Pedal Board+Instruction Book+Headphone Jack for Beginner/Adults, White - Walmart.com
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![amplifiers - Using both outputs (internal speakers and headphones) on digital pianos - Music: Practice & Theory Stack Exchange amplifiers - Using both outputs (internal speakers and headphones) on digital pianos - Music: Practice & Theory Stack Exchange](https://i.stack.imgur.com/lKP6I.png)