The vast majority of the universal players use Pioneer OEM kits. Many of the mid-fi players are Pioneer OEM kits (Pioneer, Onkyo, etc.) Nearly all of the "high-end" players are Pioneer OEM kits (Lexicon, McCormack, Teac, etc.). The bulk of the remainder use Denon kits (Denon, Marantz, etc.). Then there's the Linn Silverdisk system.
That pretty much covers it, I think.
That pretty much covers it, I think.