FIIO K11 Desktop 1400W Power Balanced Headphone DAC & Amplifier 384kHz/24Bit DSD256 for Home Audio/PC 6.35mm/4.4mm/RCA/Coaxial/Optical (Silver)

Avantree HT41899 Dual Bluetooth 5.0 Wireless Headphones for TV Watching (Set of 2) with Transmitter (Optical AUX RCA) & Headset Stand, Individual Volume Control, 40Hrs Playtime, Plug n Play, No Delay

Nobsound Q4 DAC Headphone Amplifier Bluetooth 5.0 Receiver Mini Hi-Fi Stereo Digital-to-Analog Audio Converter, U-disk/PC-USB/Coaxial/Optical to RCA

Fosi Audio SK02 DAC Amp Headphone Amplifier Desktop USB C to AUX Digital to Analog Audio Converter Adapter Preamp Optical to 3.5mm 4.4mm Balanced Combo for Home Audio System

Avantree HT4189 40Hrs Wireless Headphones Set for TV Watching with Bluetooth Transmitter (Digital Optical AUX RCA), No Delay, Dual Link Support, High Volume Over Ear Headset for Seniors, Long Range