Manea Stereo Analog Flanger V3208 Inspired by the best qualities from several different flanger circuits, this is not only one of the best flangers ever, but also a flanger that can be easily modified to dial it in the way you want to.  This flanger has two 1024 delay chips.  The V3208 model is exactly the same as the V3207 but with twice as much delay time.  The V3208 makes the differential mode a little more pronounced and 3 dimensional.  Has built in mechanical true bypass and switching connecting jack for 9vDC to 18vDC 2.5mm negative tip adapter that saves you money on batteries.  If using battery power, only use a single 9vDC battery.

Rate:  Controls the speed of the LFO (low frequency oscillator) sweep.
Depth:  Controls the intensity of the LFO sweep.
Regeneration:  a.k.a. Feedback.  Controls the amount of signal sent back into the delay line.
Manual:  This knob allows you to manually control the sweep when the depth knob is all the way counter clockwise.  It can also act as the “center” or “delay time” knob when the depth knob is not full turn clockwise.  NOTE – the manual knob is extremely interactive with the depth knob.  The more you turn the depth knob counter clockwise, the more control you have with the manual knob.  Inversely, the more you turn the depth knob clockwise, the less control you have with the manual knob, so that if you were to turn the depth knob full turn clockwise, the manual knob would do nothing at all.  Think of the depth knob as the blend between LFO and manual control.  The more you turn it clockwise, the more it is controlled by the LFO.  The more you turn it counter clockwise, the more it is controlled manually.
Normal/Differential Toggle Switch:  This switch adds or removes a second Bucket Brigade Delay (BBD) chip that is in parallel and out of phase with the primary BBD chip.