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
The MX2200 IP Codec-Mixer is the most advanced solution on the market for outdoor transmissions. It transmits in stereo with the same high audio quality as from a professional recording studio.
