Moondrop Dawn Portable Amplifier Full Balanced High-performance Mini Usb Dac/amp Support Dsd256 4.4mm Balanced Usb Type-c - Headphone Amplifier - AliExpress
Amazon.com: JadeAudio KA2 4.4mm Balanced Headphone Amps USB DAC DSD256 32bit/384kHz PCM for Android/iOS/Windows/Mac (Lightning,Black) : Electronics
ddHiFi TC44C (Blue) USB to 3.5mm & 4.4mm Dual Channel DAC/Amp
Amazon.com: Fosi Audio DS2 Portable USB C DAC DSD512 ES9018K2M Headphone Amp HiFi Tiny Mixer with 3.5MM and 4.4MM Dual Headphone Outputs for Smartphones/PC/Laptop : Electronics