The Seamoon Grind Machine is an all-analog bass distortion and overdrive pedal from Seamoon FX, made in the USA. It is a deliberately simple pedal: two controls, Cut and Blend, covering what the maker describes as a range from warm and retro-fuzzy to modern tones, aimed at bassists playing everything from funk to metal.1
What it does
Seamoon FX positions the Grind Machine as a versatile distortion/overdrive circuit for bass. The maker's own description of the sound is "Warm and retro-fuzzy or modern with the ability to crush buildings," and the pitch to players runs from funk to rock, pop, and metal, with what the maker calls a complete palette of distortion and overdrive tones in one box.1 If you are mapping out a bass board, it sits alongside other Bass Pedals and the broader families of Distortion Pedals and Overdrive Pedals; players who like the fuzzy end of its range may also want to look at Fuzz Pedals.
The controls: Cut and Blend
The pedal keeps its faceplate to two knobs:
The Blend control is the one that matters most on a bass distortion pedal. It mixes the distorted signal with clean signal, so the low fundamentals stay intact while the grit sits on top, which is why blend-equipped bass drives are a common choice for players who do not want to lose bottom end. The Cut control works alongside it to shape the tone.1
Size and build
The Grind Machine comes in what Seamoon FX calls an "Evil Looking Matte Black Enclosure!"1 Its dimensions are:
- Length: 4.43 in
- Width: 2.37 in
- Height: 1.25 in
- Weight: 1 lb1
That is a compact footprint by pedalboard standards, small enough to squeeze into a tight board alongside a Compressor Pedal or a Preamp Pedal1.
B Stock
Seamoon FX also sells the Grind Machine as B Stock at $99.00, against the regular $199.00 list price. B Stock pedals are described by the maker as being in perfect working condition and may show minor signs of handling.54
B Stock units carry the same circuit as the standard pedal at half the price; the difference is cosmetic handling marks, per the maker's listing.5
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Questions
Is the Seamoon Grind Machine analog?
Yes. Seamoon FX describes the Grind Machine as an all-analog bass distortion/overdrive pedal on its product page. There is no digital signal processing in the circuit, so the signal stays in the analog domain from input to output.
Is the Seamoon Grind Machine made in the USA?
Yes. The maker's product page states that the Grind Machine is made in the USA. Seamoon FX is the company behind the pedal, and it also sells a B Stock version of the same pedal at a lower price.
What does the Blend control do on a bass distortion pedal?
A Blend control mixes the distorted signal with the clean, unaffected signal. On a bass pedal this matters because low end can thin out under heavy distortion; blending clean signal back in keeps the fundamentals full while the distorted portion adds grit on top. The Grind Machine's Blend control sits alongside its Cut control.
What is a B Stock Seamoon Grind Machine?
B Stock units are pedals in perfect working condition that may show minor signs of handling.
How big is the Seamoon Grind Machine?
Seamoon FX lists the Grind Machine at 4.43 inches long, 2.37 inches wide, and 1.25 inches high, weighing 1 lb. That is a compact footprint that fits easily on a crowded pedalboard.
Sources (5)
- Grind Machine, Seamoon FX, 2026-10-07
- Skye Machine, Seamoon FX
- Octatron, Seamoon FX, 2026-10-07
- MORE! - Seamoon FX Pedals, Seamoon FX
- Grind Machine, Seamoon FX, 2026-09-28
