Amazon.com: HiBy FC4 Headphone Amplifier Portable DAC with 4.4mm and 3.5mm Headphones Outputs Support MQA16X PCM768K DSD256 High Driving Power for Android/iOS/Mac/Windows : Electronics
CEntrance USB-Powered DAC/Amp with XLR Outputs DACPORT PRO B&H
iFi xDSD Gryphon Portable USB Bluetooth Amp/DAC
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