Yes, there is one Aleph3 head, but you might find it in HA-BK and HA-NAT. The point is that you can choose which Light Engine to put in it, meaning you can have it the way you want it, choosing LED, driver and current. And you can later change the LE to a different one.
Then there are more different Aleph heads to choose from ...
The ALeph System:
For more info it'd be best to visit the McGizmo forum and look at the sticky threads. Those contain links to FAQs and E-Series Compatible part threads that will help you. I suggest reading the Aleph FAQ to learn what an Aleph really is before purchasing.
bernie