Here the manuals for the older Nodal NInja's.
SPH-1 (discontinued) http://nodalninja.com/Nodal_Ninja_SPH1.pdf link
SPH-2 (discontinued) http://nodalninja.com/sph-2_user_manual.html
It is important to note that while many older units are still very functional and being used that they have have fell out of warranty and support is not offered. However that said we will do our best to answer any questions you might have about them here in our forum.