Picked this up yesterday, used but very clean. This box is supposed to have 10 CDs, mine is missing the two-CD collection "Groovin'". This is not a representation of "Woodstock" in any manner, but it is a good representation of Top 40, a little bit of true rock and more than a little sunshine pop. The box uses the "Time-Life" logo, but the logo was licensed by "Direct Holdings Americas Inc., 2010", so maybe not so much Time-Life, eh? In any case, the mixes sound pretty up to date, some sound like remixes—the mix of "Turn, Turn, Turn" (one of the earliest tracks here), has instruments in one channel, vocals in the other, the original is in hard mono on the "Turn, Turn, Turn" album on Tidal. Other songs seem to have greater clarity than versions I've heard from other CDs of this material. "Happy Together" comes to mind*. However, I suspect there's some peak limiting/compression going on, though I know the originals have some obvious compression to make them "radio friendly". I usually listen to CDs in my car, so this might be a feature, not a bug. Well worth the $3 I paid for it, though I now feel committed to find a copy of the missing two-CD set.
*Edit. I have a different transfer of Happy Together on "Lost & Found in the Sixties, Songs You Never Forget", Liberty 7243-5-97032-2-0, from 2004. The level volume level of Happy Together on the Liberty compilation is lower than the "Woodstock" collection, but the peak distortion sounds the same.