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: Amazon.co.uk: Electronics & Photo
Amazon.com: YMOO Portable Headphone Amp DAC, DSD512 and 768K/32Bit, 16Ω-600Ω/35mW/Hi-Res Hi-Fi Desktop DAC for PC Headphone Out/iPhone, 3.5mm/4.4 mm/Optical/Coaxial Output for Windows/Android/IOS/PS5/Home Audio : Electronics
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: FiiO Q3 Amplifier Headphone Amp High Resolution DAC DSD512 for Smartphone/PC/Laptop/Home/Car Audio 2.5/3.5/4.4mm Output : Electronics
Amazon.com: 1Mii Lavaudio DS400 Portable DAC/Headphone Amplifier Stereo Supports 768K/32Bit and Native DSD512, Hi-Res Hi-Fi for PC Headphone Out/3.5/4.4 mm/Coaxial/Optical Out Windows/Android/iOS Compatible : Electronics
Amazon.com: KGUSS DAC-K3 PRO USB DAC Headphone Amplifier Mini HiFi Optical/Coaxial/USB DAC Decoder Audio 24Bit 192KHz DA Converter ESS9018K2M Decoder Multifunctional Preamp Desktop Amplifier (Black) : Electronics
Hiby FC5 MQA Portable USB DAC, 4.4mm Balanced Headphone Port AMP
Amazon.com: Geekria SJC01 Portable Headphone Amplifier/DAC/AMP with USB and Type-C Input, 3.5mm Audio Jack Output, Compatible with 384K/32Bit Hi-Res APPL Music Lossless Audio, PC, Laptop, Android Phones : Electronics
Amazon.com: Portable USB DSD 192 KHz / 24bit DAC and Headphone Amplifier – DSD64 DSD128. Use with Smartphones/Digital Audio Players/Tablets/Laptops SD-DAC63057 : Electronics
Amazon.com: USB C DAC - Portable 32 Bit/384kHz Dosmix Headphone Amplifier, HiFi Converter, Qualcomm chipset, Impedance 600Ω, SNR123dB, Premium Sound Enhancer for Android/Windows/MacOSX System Smartphone Laptop : Electronics
Amazon.com: eSynic Headphone Amplifier Portable Amp 3.5mm Gain Switch & 192KHz DAC Digital to Analog Audio Converter Digital Optical Coaxial to Analog L/R RCA 3.5mm Jack : Electronics