Alnico magnets, an alloy of aluminum (Al), nickel (Ni), and cobalt (Co), are among the most popular choices for electric guitar pickups due to their warm, responsive tones and historical significance in music. Developed in the 1930s, Alnico has powered iconic guitars from Fender Stratocasters to Gibson Les Pauls. The different grades—Alnico 2, 3, 4, 5, and 8—are classified by chemical composition and magnetic strength, influencing everything from output level to tonal character. Lower grades (2-4) lean toward vintage, mellow sounds ideal for blues and jazz, while higher grades (5-8) deliver brighter, more aggressive tones for rock and metal. In this guide, we’ll break down each type’s properties, tone differences, output, and real-world applications, helping you choose the right magnet for your playing style.
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