The tanks included with this are a substitute and functional equivalent for those specified in the parts list.

The dual-polarity DC power supply for the kit may be 12 or 15 volts, regulated. Two-nine volts could even be used temporarily. A dual-polarity DC supply is with a positive supply with respect to a 0v ground/circuit-common, and, a negative supply. Imagine two DC supplies, series-connected and with the mid-point connected as ground/circuit-common, the free plus pole is positive DC and the free minus pole is negative DC.

The images below are examples of the wiring needed for connection with a power supply and line-level audio input and output signals (i.e., a mixer reverb or effect send and return patch points).

top-view image
http://paia.com/manuals/docs/hs5.jpg

bottom-view image
http://paia.com/manuals/docs/hs4.jpg