Have not been on this site in some time, however I received alerts from my email from this very old thread I participated in, so thought I’d chime in.
Was a day 1 Driveline guy, and Kyle recommended for my son. Bought a unit likely way before many would even consider buying for personal use.
My take : It works for recovery and is very different than a TENS unit, and active recovery is much better than ice. IMO this was way ahead of the game, and not surprised that so many programs use it.
Son was training at Driveline when Bauer was there one late summer, and Trevor had all kinds of “data” he used on how he used the Marc Pro.
Now is this for young teenagers?….. probably not, but if you can afford it, why not.