Any use for a MTS stereo decoder in 2021?

[ESigma25]

I found an old Recoton MTS TV Stereo Decoder box at a thrift store for two dollars and decided to get it on a whim. It's got buttons for DNR (presumably Dolby noise reduction), "Synth", "Spatial", and Stereo on the front, a DNR adjustment dial, and on the back there's inputs for "MPX IN", "PROBE IN", a switch to choose between MPX and Probe In, and two sets of stereo outputs. Model number is V622.

I don't even know what MTS is, but I think I have some AV gear that could use it.