The 3 Best Portable Headphone Amps With Built-In DAC of 2023 | Reviews by Wirecutter
Advanced MP3 Players
Amazon.com: HiBy FD3 High Resolution Headphone Amp USB DAC Type-C Nearly Zero Noise Floor 3.5mm SE+2.5mm+4.4mm Balanced Headphone outputs : Electronics
Amazon.com: Syba Sonic 24bit 96KHz USB DAC Stereo Headphone Amplifier 2 Stage EQ Digital/Coaxial Output and RCA Output SD-DAC63116 : Electronics
Best DACs of 2023 | The Master Switch
Amazon.com: Audioengine D1 32-bit Portable Headphone Amp and USB DAC AMP, Preamp, Laptop Desktop Headphone Amplifier, Optical Inputs, High Definition Audio (2nd Gen) : Electronics
Amazon.com: Syba Sonic 24bit 96KHz USB DAC Stereo Headphone Amplifier 2 Stage EQ Digital/Coaxial Output and RCA Output SD-DAC63116 : Electronics
Shanling Audio UA2 Portable USB DAC AMP Review: This $85 Dac Amp Combo Has Jaw-Dropping Power and Sound! - HIFI Trends
Luxury & Precision W2 Review - Best Portable USB DAC AMP for Smartphones? - ThePCEnthusiast
ULTRA CHEAP CHI-FI DAC-AMP MINI REVIEWS: Absurdly inexpensive audio solution – No Borders Audiophile
Archimago's Musings: MEASUREMENTS: "CheapDAC'22" - Cheapest DAC in 2022? US$3.57 S/PDIF DAC from AliExpress. (Does objective analysis correlate with sound quality? Of course! And Lavorgna's DUT comment - "HiFi" is not art.)