SMKll ToneBender- there are so many versions of   
      this, that i cant begin to name them, but this is a
   Silicon (not Germanium) NPN Version (negative
   ground) for my own convenience. this may just be
   THE classic-est of rock sound,  every one had it.
   before there was the TS-808, there was the tone
   bender.   pushing a tube amp, this fuzz sounds
   amazing....tons of 'tubey' bite, vintage feel, and for
   christsake its quiet when you fizzely 
   gate,  it just dies down to hush......