MICCA OriGen+ High Resolution 24-Bit 192kHz Headphones Preamp Dac

M-Audio Micro DAC 24/192 Portable 24 bit/192 kHz USB Digital-to-Analog Converter

LH Labs Geek Out 720 USB DAC Headphone Amp

Audioengine D3 Premium 24-Bit DAC and Headphone Amp

AudioQuest DragonFly USB DAC V1.5

AudioQuest DragonFly DAC headphone USB Digital Audio Converter (Black) Preamp

NuForce uDAC2 compact Digital to Analog Converter & Headphone Amplifier

Micca OriGen plus DAC headphone and speaker amplifier USB compatible.