My Fender Strat is a Malmsteen signature model.
One of its features is synchronized tremolo.
What's the difference between synchronized and un-synchronized tremolo? How can I tell whether it is synchronized or not?
A synchronised tremolo is a tremolo system that 'moves' the bridge and the tailpiece, rather than, for example, a Bigsby, that only 'moves' the tailpiece.
Because a synchronised trem moves the bridge and the tailpiece, it can not only affect the string tension but also the actual string length. For this reason, it provides a greater range on pitch change, and it is easier to 'up-bend' than on a standard Bigsby.
The strings pass over the bridge and through the 'tailpiece block,' which is a block of metal attached below the bridge plate. The tailpiece block extends through the guitar, and in a bay on the underside of the guitar the block is held straight by usually 3 or 5 springs.
The tension of these springs equal the amount of tension of the guitar strings. Hence, when you move the 'Whammy' bar, you are moving the whole unit of the tailpiece block, and therefore altering the tension and length of the strings.
Hope this helps.