The Electro-Harmonix LPB-2 (Linear Power Booster 2) is a vintage stompbox boost pedal from the mid-1970s, designed to give your guitar signal extra punch and drive. With a simple one-knob design, it delivers clean transparent boost or can push your amp into natural overdrive for added sustain and presence. Built in rugged metal housing, the LPB-2 has become a classic example of early Electro-Harmonix design — simple, effective, and powerful.

This pedal is perfect for players wanting to cut through the mix, push tube amps into saturation, or simply add more volume and body to their tone.

As you can see from the photos this pedal is very well used but still in great working order

Specifications:

• Manufacturer: Electro-Harmonix
• Model: LPB-2 (Linear Power Booster 2)
• Era: Circa 1976 (Made in New York, USA)
• Effect Type: Analog clean boost / power booster
• Controls: 1 × Boost (output level)
• Footswitch: On/Off bypass switch (no LED indicator)
• Input/Output: Mono ¼″ input and output jacks
• Power: 9V battery only (no DC jack on vintage units)
• Bypass: Mechanical true bypass style (signal passes through when off)
• Signal Boost: Up to ~26dB of clean gain
• Tone: Transparent with minimal coloration; drives amps naturally when pushed
• Enclosure: Rugged metal stompbox case
• Other: No LEDs, no EQ controls, simple and straightforward vintage design