Sennheiser RS 185 Wireless headphones with transmitter at Crutchfield
Amazon.com: Sennheiser SC 135 USB-C (508355) - Single-Sided (Monaural) Headset for Business Professionals | with HD Stereo Sound, Noise-Canceling Microphone, & USB-C Connector (Black): Computers & Accessories
Amazon.com: Sennheiser HD 599 SE Around Ear Open Back Headphone (Amazon Exclusive) & GSX 1000 Gaming Audio Amplifier, 7.1 Surround Sound, PC and MAC, Gaming DAC and EQ, for Windows, Mac, Laptops