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Electro-Harmonix LPB-3 Linear Power Booster & EQ Pedal

Electro-Harmonix LPB-3 Linear Power Booster & EQ Pedal

The Electro-Harmonix LPB-3 Linear Power Booster and EQ Pedal, an upgraded version of the first Ele...

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Electro-Harmonix LPB-3 Analogue Linear Power Booster & EQ Effects Pedal

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Product Information

Full details

The Electro-Harmonix LPB-3 is designed for guitarists seeking to shape their tone with precision and add significant boost. It provides up to 33dB of clean gain and features an active EQ with bass, treble, and parametric mids controls. While offering extensive tone-sculpting capabilities, users should note that the pedal requires a 9.6V power source and may require some experimentation to find the optimal settings for their rig.

All features

Model Part NumberLPB-3
BrandElectro-Harmonix

Extended Product Information

FAQs

What is the maximum boost available?

The LPB-3 provides a maximum boost of 33dB, but it can be adjusted down to 20dB via the MAX switch.

What type of power supply does the pedal require?

The pedal requires a 9.6V DC power supply with a center-negative polarity.

What is the difference between Buffered and True Bypass?

True bypass mode directly passes the signal through when the pedal is off. Buffered bypass provides a buffered signal to maintain signal integrity in long cable runs, even when the pedal is off.

How do I use the parametric mids control?

The MID FREQ knob adjusts the center frequency being boosted or cut, while the Q knob controls the bandwidth of that frequency.

Can I use this pedal with other instruments?

While designed for guitar, the LPB-3 can be used with other instruments as well.

What is the purpose of the Pre-Gain knob?

The Pre-Gain knob allows you to fine-tune the total gain and volume of the boost.

Troubleshooting

No sound.

Check all connections, ensure the pedal is receiving power, and that your amp is on and working.

Weak or distorted signal.

Check the power supply for sufficient voltage. Adjust the BOOST and PRE-GAIN controls to optimize the signal level.

Noise or hum.

Ensure the power supply is isolated. Experiment with the Buffered/True Bypass switch to reduce noise.

Pedal is not boosting.

Make sure the pedal is engaged (LED on). Increase the BOOST control to add gain.

Pros and Cons

Pros

  • Offers a wide range of tonal shaping capabilities.
  • Provides a significant boost for solos or to overdrive amps.
  • The parametric mids section is very effective.
  • Compact and pedalboard-friendly design.
  • Selectable Buffered/True Bypass for signal integrity.
  • High headroom ensures a clean boost.

Cons

  • Requires a 9.6V power supply (not included).
  • Can be complex for beginners due to the multiple controls.
  • May take time to dial in the perfect sound.
  • The 33dB boost might be too extreme for some applications.
  • Limited to a mono signal path.

Setup, Compatibility & Care

  1. Power: Connect the LPB-3 to a 9.6V DC power supply (200mA) with a center-negative polarity. Ensure the power supply is compatible with the pedal's requirements.
  2. Connections: Connect your guitar to the input of the LPB-3. Connect the output of the LPB-3 to the input of your amplifier or another effects pedal.
  3. Bypass: Choose either Buffered or True Bypass via the switch, depending on your signal chain needs.
  4. Settings: Experiment with the controls to find your desired sound. Start with all controls at the neutral position (12 o'clock) and adjust gradually.
  5. Care: Wipe down the pedal with a clean, dry cloth. Avoid exposure to extreme temperatures or humidity.

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