october 2015

Check out a custom Jackson Explorer that was modded with medical equipment parts.

Name: Jeroen Sevink (aka Jerry Knives from the Jerry Knives Band)
Hometown: The Netherlands
Guitar: Custom-modded Japanese Jackson Explorer

Jeroen Sevink has been experimenting with guitars his whole life, and he even builds his own pedals. “I call this sweet guitar Industrial Steampunk-style," he says. “It still has its standard neck, which I think is amazing, so I left it as-is. But that's about all that is standard."

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Oklahoma-based stomp veteran Robert Keeley puts Magnatone-style and dynamics-tracking capabilities into a tremolo box quite unlike any other.

For a couple of decades now Robert Keeley’s name has largely been synonymous with his great-sounding takes on the rare old Ross Compressor pedal, but in the last year Keeley has worked hard to change that: He’s modified and downsized many previous designs, explored more eye-grabbing visuals, and released around 20 new pedals—many of which prove that he’s as interested as newer pedal outfits in exploring unusual sounds. The DynaTrem is a perfect example of the latter. While its name and amp-grille graphics might convey a stomp aiming for classic-voiced, amp-style tremolo, the DynaTrem has loftier, weirder goals.

Delta, Delta, Sum
The “Dyna” part of the new Keeley’s moniker isn’t just some ’70s-style way of saying “It sounds groovy, man.” It’s telling you that the effect responds to input dynamics by mapping either rate or depth to the volume of your playing. The DynaTrem serves up this dynamic responsiveness in two modes (selectable via a 3-way toggle) and via four knobs: depth, rate, shape/reverb, and level. The way this is communicated on the pedal’s face may conjure fond memories/nightmares/cold sweats from past geometry, trigonometry, and/or calculus courses, depending on your tolerance for such horrors: All three mode labels use a Greek character—either Δ (Delta) or Σ (Sigma)—in an effort to succinctly communicate the chosen function’s basic gist. Δ (which means “4” in math, according to Prof. Wikipedia) seems to refer to the four waveforms you can select using the shape knob in ΔD and ΔR modes. I’m no engineer, but I presume ΣNT mode’s “Σ” character (which means “sum”) refers to how this mode sums rate and depth values, and/or the fact that here there’s an added reverb effect. (In this mode, shape/reverb governs reverb level rather than selecting waveform.)

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