PerfectWave transport vs. PerfectWave memory player

Rookie question: are there substantial differences between these two transports? The former is available on the used market at big discounts . . .

Believe the official name is the Perfectwave Transport Memory Player.

Believe it is a single product, no differences except older stock may not be under warranty (which I understand is 3 yrs).

Product Manual:

It is, they are the same product.