Vintage Electro-Harmonix LPB Linear Power Booster. This is said to be the first thing Electro-Harmonix sold.

This pedal has been refurbished by Stolhand Pedals and is in excellent working condition. All the electronics have been gone through and been determined to be in great condition.

Note for collectors: This is a rare variation with a positive ground. 

This is a power booster pedal. It will give you a very clean boosted signal. 

List of refurbished/improvements:

-The switch and volume potentiometer have been removed from the pedal and thoroughly cleaned with Deoxit. There are no pops and crackles from dirty parts.

-New 9V Battery connector

-replaced original 2N5088 transistor with a new 2N5088 transistor. Note: The original transistor will come with the pedal in a little baggie.

-replaced all screws with identical unrusted screws. Note Son screws were missing when I got this pedal and the original ones will come with it in a little baggie.