Cambridge Audio DacMagic 200M Stereo DAC/headphone amplifier/preamp with built-in Bluetooth® at Crutchfield
Amazon.com: Geekria SJC01 Portable Headphone Amplifier/DAC/AMP with USB and Type-C Input, 3.5mm Audio Jack Output, Compatible with 384K/32Bit Hi-Res APPL Music Lossless Audio, PC, Laptop, Android Phones : Electronics
Apogee Introduces Groove – Portable USB DAC and headphone amp for Mac and PC
Amazon.co.jp: Helm Audio Volt DAC/AMP, USB-C Portable High Performance DAC/Headphone Amplifier Support MQA Playback Mobile Studio Sound USB-C to 3.5mm Audio Cable for Android, IOS and PC, THX Certified, Black : Electronics