Electro Harmonix Hare Lip

 A forgotten and quite odd one from the early days of EHX. 

Despite being marketed as a "Microphone Echo" and having "Echo" as one of the labels for the controls, this is actually a tremolo circuit with some quirks. There is no "Depth" control as in most tremolo effects, instead there are the "Echo" control which adjust the output level for the LFO signal. "Volume" control adjust the clean signal. "Speed" adjust the LFO rate. 

The schematic is redrawn from a factory schematic dated 1972. Some odd resistor values but I'm pretty sure closest common value will work. Also, the transistors is the same as in Triangle/early Rams Head Big Muffs. They are quite hard to source and Hfe is all over the place. 2N2222's or 2N3904 might be good subs.

Not much info on the web on this one but there is a short writeup HERE. 

 

 

 

 

 

 

 

Effdub Audio What the Fuzz?!

 A simple and nasty octave up fuzz based on Tim Escobedos Push Me Push You fuzz. But here, the input transistor is replaced with a LM386 audio amplifier for more gain that pushes the transistors harder. Also, there is also a simple treble cut tone control added.