LPB-3
Compact analog booster with an active 3-band EQ, a parametric mid control and up to 33dB of clean boost. Aimed at guitarists who want to shape tone and drive an amp harder from a small pedalboard footprint.
- Up to 33dB of clean boost, MAX switch selects 20dB or 33dB
- Active EQ: Bass, Treble and parametric Mids
- Mid frequency sweeps 240Hz to 3.3kHz with High/Low Q switch
- Selectable buffered or true bypass
- 30V internal rails for extended headroom
- Nano-sized chassis, 9.6V DC adapter included
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The LPB-3 is an analog booster and equalizer in a Nano-sized chassis. It is a modern take on the LPB-1 booster that Electro-Harmonix introduced in 1968. The output stage can add up to 33dB of clean gain, and a MAX switch limits the ceiling to either 20dB or 33dB.
Tone shaping comes from an active EQ with Bass and Treble knobs plus a parametric mid section. The mid section has separate Mid Level and Mid Freq controls, with the centre frequency sweeping from 240Hz to 3.3kHz, and a Q switch that changes the mid band between broad and narrow. A Pre-Gain knob sets the level, from unity to 20dB, before the signal reaches the EQ. This lets users avoid clipping when boosting frequencies, or add volume when cutting them. Internally extended 30V power rails give extra headroom.
The pedal is mono, with a single input and output jack. Bypass can be switched between buffered and true bypass. It runs from a supplied 9.6V DC adapter and does not take batteries.
Video
Specifikationer
- Mærke
- Electro-Harmonix
- Model
- LPB-3
- Kategori
- Effekter og pedaler
Audio
- Circuit
- Analog
- Signal path
- Mono
- Maximum boost
- 33dB or 20dB (MAX switch)
- Pre-gain range
- 0dB (unity) to 20dB
- Bypass
- Selectable Buffered / True Bypass
Controls
- Knobs
- Boost, Pre-Gain, Bass, Treble, Mid Level, Mid Freq
- Switches
- MAX (20dB / 33dB), Q (Low / High)
- Mid frequency range
- 240Hz to 3.3kHz
- Bass EQ
- Boost or cut below 240Hz
- Treble EQ
- Boost or cut above 3.25kHz
- Footswitch
- Engage/bypass with status LED
Inputs
- Input impedance
- 1MΩ
- Maximum input level
- +20dBu
Outputs
- Output impedance
- 660Ω
- Maximum output level
- +22dBu
Power
- Power supply
- 9.6VDC-200mA power adapter included
- Current draw
- 120mA
- Polarity
- Center-negative
- Maximum supply voltage
- 12VDC
- Battery operation
- Not supported
Physical
- Dimensions
- 4.5 x 2.75 x 2.1 in