[SOLVED] What is the difference between the EQ curves?

Why don't you flick the switch and listen to what it does?

like it says on the mixer, normal is -26db, Isolator is - infinity

I will when i am home, i thought i would just ask for a 'simple' answer while the question was in my head.

...... thanks.

What is the actual purpose of it though? 

some people, Like myself, Prefer it to be an isolator meaning when I kill the bass eq, it is a complete kill, not just -26db

The essence of it is:

EQ mode = -26dB cut.

Isolator = infinite cut.

For more reading, check out this thread:

http://www.djtechtools.com/2011/12/11/an-introduction-to-mixing-with-dj-isolator-mixers/