Motor Controller ugrade for Raven One Turntable

I think this updated controller is now standard on Raven One (per Absolute Sound review last year).

Since a motor controller upgrade can only affect the stability of the speed of the turntable, how bad can the original speed be for there to be a huge improvement in the sound. I mean, seriously, I have been hearing this a lot lately, and I have thought about an improved power supply or motor controller for my tables, but it just doesnt make sense that the original power supply that comes with a high end turnable is so poor that it can be hugely improved upon. so someone please explain what I am missing.

Hyperbole? First thought usually whenever I hear " huge improvement" used.

I spoke with Jeff from Highwater Sound today. The "upgraded" motor controller for the Raven One is the same motor controller used with the Raven AC. It is larger and heavier than the Raven One controller. The motor controller does more than just control the speed of the platter. It has 10,000 times the capacitance of the One's controller. Jeff says the Raven One has more detail, a larger soundstage, and more dynamics with the AC motor controller. Better caps do make a difference. A friend of mine modded my Ayre phono stage with better caps (among other things) and the difference in the sound was dramatic (much more open, clear, and dynamic).

Jeff has never steered me wrong. I will go for the AC motor controller as soon as funds allow.