I believe just about all of them with a few exceptions (I know my 6X Pioneer wasn't capable of unlocking, but most other Pioneers should work) are unlockable. And also, I would rather look into the Toshiba rather than a Pioneer b/c you will be getting digital sound output, less drive noise, and comparable speed. Also if you are willing to shell out the clams than you should look into the 16X Aopen which is the king of DVD Drives right now