Amazon.com: Fosi Audio Q4 Headphone Amplifier Mini Stereo DAC 24-Bit 192 KHz USB Optical Coaxial to RCA AUX Digital-to-Analog Audio Converter Adapter for Home Desktop Powered Active Speakers : Electronics
Audio-Technica ATH-M50X Black Headphones w/ On-Stage HA4000 Headphone - Pixel Pro Audio