The PHRSR (pronounced "phraser") is a two channel 1-16 step knob recorder / sequencer. Complex sequences with independent step lengths can be created quickly and intuitively. Great for modulation of anything in your synth. Channel A is on the left, B on the right.
CLK: a rising edge on the CLK input will increment the step. External clocking is realized through "hard-sync" of the internal clock. A pulse is output from the CLK output at each increment.
DC: The value to be written into a sequence.
REC: When pressed, the value of DC overwrites the current step's value. When STEPS is also pressed, the length of that sequence will reset to 1 and increment with each clock pulse until either STEPS or REC is released.
Rate: Adjusts the internal clock rate.
Note: -12V is unmarked on the power header on these modules (who would do such a thing?!) The red stripe on your power cable should go DOWN. -12V is DOWN.