Boss ME 70 Electric Guitar Effects Pedal Processor "pedals manuals" Questions

Which type of Drum Machine or Multieffect Pedal allows to STORE chosen combination of beat pattern and tempo? what effects processor are you using? check their manual

have feedback from jamman stereo that i cant get rid of Do you mean you stay in a loop?.... Or does your mic receives the signal, without that beining the thing you want. If it's real feedback then ...