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"Turn your music into recording studio quality with the Apogee Groove Portable Headphone Amplifier. Apogee Groove is a portable USB DAC and headphone amp that works with both Macs and PCs. It utilizes the same audio technology that recording studios use to enhance the music on your laptop. To use Apogee Groove, simply connect it..."
<https://thegadgetflow.com/portfolio/portable-headphone-amplifier/>