make sure you use true bypass effects and stay away from all mass produced pedals like Boss,Digitech,Line 6,MXR they are all cheaply made and not true bypass. Go to pedalspluseffectswarehouse.com,pedalgeek.com,proguitarshop.com, tonefactor.com or tonetronix.com they all deal in quality effects and most all are true bypass. Also check out Artec pedals on ebay they are cheap and true bypass i have a delay of there's its awesome also its analog was like 40 dollars also no noise or hum and doesn't color or alter tone hope this helps later