Apparemment, ça se résume à une différence de composants :
"The main difference is the use of the now discontinued Panasonic chips used for the delays. The Memory Man has them while the Memory boy does not. The Memory Man has a slightly warmer, more analog sound to it hence the higher price. That also gives the Man a longer delay time in most cases."
Sauvez un eucalyptus, mangez un koala !