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Home / Guitar Electronic Accessories / ESP/MM-04/Boost/Alexi Laiho Electric Guitar Preamp Active Gain Pickup Circuit

Attributes

Brand -
Category Musical Instrument Accessories / Guitar Electronic Accessories
Origin -
Circuit Type Active Preamp Boost
Pickup Compatibility Passive Humbuckers
Power Source 9V Battery (Not Included)
Gain Boost Level +15dB Fixed
Control Configuration Volume, Tone, Boost Switch
Installation Requirement Soldering Iron Required
Casing Material Shielded Metal Housing
Input Impedance 1 Megohm
Output Impedance Low Impedance Balanced
Design Origin Finland Inspired Series

5 reviews

A

Anonymous

Apr 11, 2026

Rating: 5/5

Screams like a Children of Bodom track

Installed this in my ESP LTD and the difference is night and day. The gain structure is tight and perfect for metal.

A

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect mid-range punch

Exactly what I was looking for to cut through the mix. The active boost doesn't add noise which is a huge plus.

A

Anonymous

Feb 21, 2026

Rating: 4/5

Great circuit, needs space

Sounds fantastic but make sure your guitar cavity is large enough. Had to route some wood to fit the battery clip.

A

Anonymous

Feb 03, 2026

Rating: 5/5

Best upgrade for the price

Feels like I bought a new guitar. The sustain is improved and the highs are crisp without being harsh.

A

Anonymous

Jan 25, 2026

Rating: 5/5

Recording ready tone

Tracks beautifully. No hum or buzz even with high gain settings. Highly recommend for studio work.

5 FAQ

Q: Can I install this without soldering?

A: No, permanent installation requires soldering connections to the pickup wires and output jack.

Q: What is the warranty period?

A: This product comes with a standard 1-year manufacturer warranty against defects.

Q: Will this fit in a Stratocaster?

A: It may require cavity modification as active circuits often need more space than passive wiring.

Q: Does this work with active pickups?

A: This circuit is designed specifically for passive pickup systems.

Q: Is the battery included in the box?

A: No, a standard 9V alkaline battery is not included and must be purchased separately.

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