MXR® BLUE BOX™ FUZZ,MXR Blue Box :: MXR :: Effects :: Equipment :: Banzai Music GmbH,MXR Blue Box Fuzz / Octave,MXR Blue Box octave fuzz 1978 Block logo original vintage USA | Reverb,Frank Zappa Owned 1975 MXR Blue Box Script Logo Vintage Effect Fuzz Octave Synthy Pedal