Aiyima Mini Hifi 2.0 Digital Audio Decoder Usb Dac Headphone Amplifier 24bit 96khz Input Usb/coaxial/optical Output Rca Amp Dc5v - Headphone Amplifier - AliExpress
Fostex HP-A4 24-Bit USB DAC Headphone Amplifier HP-A4 B&H Photo
Amazon.com: JadeAudio KA2 4.4mm Balanced Headphone Amps USB DAC DSD256 32bit/384kHz PCM for Android/iOS/Windows/Mac (Lightning,Black) : Electronics
Amazon.com: Syba Sonic 24bit 96KHz USB DAC Stereo Headphone Amplifier 2 Stage EQ Digital/Coaxial Output and RCA Output SD-DAC63116 : Electronics
TEAC - AI-303 USB DAC Amplifier - Music Direct
First Listen: Meridian Prime Headphone Amplifier USB/DAC - The Absolute Sound
Shanling Audio UA2 Portable USB DAC AMP Review: This $85 Dac Amp Combo Has Jaw-Dropping Power and Sound! - HIFI Trends
HELM BOLT DAC/AMP - MQA Certified - HELM Audio
UHA-6S.MKII USB DAC and Headphone Amplifier — Leckerton Audio
Sound Blaster G3 Portable Plug-and-Play USB-C DAC Amp for PlayStation® 4, Nintendo Switch™ Gaming Consoles, PC, and Mac - Creative Labs (Pan Euro)
Amazon.com: HELM Audio Bolt DAC/AMP, USB-C Portable High-End DAC/Headphone Amplifier with MQA Playback. Mobile Studio Sound for Android, iOS and PC. USB-C to 3.5mm Audio, THX Certified : Electronics
TEAC UD-505-X USB DAC Pre-amplifier – NativeDSD Gear