They are made of aluminum and externally powder coated. They insulate PTFE and O-rings on the sealing plugs and connectors. Here you will find the different models and their specifications.
4 Channel Portable Stereo Headphone Amplifier - Professional Multichannel Mini Headphone Splitter Amplifier with Balanced 4 ¼ ”TRS Headphone Output Jack and 1/4" TRS Audio Input for Sound Mixer - Pyle PHA40 BLACK
USB interface for podcasting, microphone input (XLR, Phantom), 2 mono outputs (jack 6.3), phone input and output, camera output, headphone output, USB-C cable and music software package included.
Focusrite Vocaster Two - Podcasting interface for recording host and guest. Two microphone inputs and two headphone outputs, with auto gain, enhancement and mute.
