![]() ![]() The LPB‑2 is simple and effective, if used pragmatically. In use, it ‘does what it says on the tin’, with quite a substantial level of boost available, great for going from clean rhythm chops to screaming lead guitar solos with just a stomp of the switch. The internal wiring is very basic indeed and looks crude because the components are hard wired, rather than the standard practice of mounted on a circuit board. It is in tip‑top condition, looking almost new and still boxed, which is pretty rare after all this time. The solder on the pot covers the year code, so I’m going by recollection and the older style original box, to suggest that it is c.1976. This pedal has been owned by me from new. ![]() Here we have a one‑owner 1976 Electro‑Harmonix LPB-2 Linear Power Booster. Vintage ones are still relatively numerous, probably because there is so little to go wrong with them, and they can provide a cost-effective entry into the world of vintage effect pedals. ![]() The ‘Off’ switch is effectively redundant, meaning that the only (nameless) control is the level of boost applied when the effect is switched on. It seems strange that this demure effect contributed to Electro‑Harmonix becoming such a successful business. It was a deceptively clever idea that is now taken for granted. The aim was to allow guitarists to push their valve preamps of the time into natural saturated overdrive. Another novelty with this pedal was that it was boosting all. Indeed, previous boosts like the Dallas Rangemaster Treble Booster were using germanium transistors. It is the first boost pedal using a silicon transistor. The simple active circuitry carries out a single function, to boost the input signal and output it into an amp. The LPB1 (Line Power Boost 1) is a boost pedal that was commercialized in 1968 by Electro Harmonix. The LPB-1 was a small box with an integral jack plug, while the LPB-2 was a normal floor pedal. The plain-looking Linear Power Booster (LPB) was the first effect developed by founder of American company Electro‑Harmonix, Mike Matthews. ![]()
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