SMSL SD-793II DAC and Headphone Amplifier 24BIT/96KHZ No Power Cord Tested Work

16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable

Portable HiFi Headphone Amplifier Amp 3.5mm Headset Amplifier Two-Stage GAIN

Mayflower O2 Objective2 Headphone Amplifier w/ Power Adapter Tested

SMSL SH-9 Balanced Digital Headphone Amplifier THX 3 Watts @32ohm XLR 6.35MM RCA

Fosi Audio Q4 Headphone Amplifier Stereo DAC 24-Bit 192 KHz USB for Speaker

Fosi Audio BOX X2 Phono Preamp for Turntable Tube Preamplifier MM Phonograph US

Portable Headphones Amplifier Stereo Headphone Amp Volume Control with RCA Input