Big Al TrebbleMaker

Afterward, Grohl turned to Johannes and said, “Thank you for playing music with me. You’re a … genius.”

Late in 2014, Johannes self-released Fragments & Wholes (volume 1). He recorded all of the instruments at home by himself. The CD has a wide variety of musical styles, and the Greedtone JHI-100 is all over this recording. Simply put, nobody plays like Al. Nobody.

There is a reason that Johannes is our only endorsed artist. He was one of the first artists to embrace the JHI-100 tube amplifier. Greg Williamson, founder/owner of Greedtone, has been working with Johannes for the past couple of years on a signature Treble Booster called “The Big Al Treblemaker.”


    • True-Bypass
    • Built-In Noise Reduction Circuitry
    • LED Switch Indicators
    • Dual Gain settings
    • Fully Adjustable Volume and Bass
    • Silver Mica Caps (for cleaner highs)
    • Built-In 9V DC Battery Back-Up Connection(not recommended)
    • Long Lasting High Quality Pots
    • Hand-Wired Using Silver wire with Teflon jacket

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