"ice" is actually 4MethylAminorex, which affects the norepenephrine system, rather than the dopamine system, like amphetamines do. however, i've personally never seen it so i cant tell you anything about the effects
While ice does properly refer to 4-meythylaminorex, it is INCORRECT that 4-MAR affects the norepinephrine system...it does so only very miniminally, and in fact, the biggest difference between amphetamine and 4-MAR, is that amphetamines have much more of an effect on the norepineprhine system than 4-MAR.
Amphetamines = norepinephrine, dopamine
Ice/4-MAR = serotonin, dopamine
MDMA = serotonin, norepinephrine
Of course, all of the above drugs affect all three neurotransmitter systems but it seems that if you had to pick two big players for each drug, that those are what you would choose.