That's an MXR El Grande Bass Fuzz, in all of the clips I posted so far with fuzz.
Here's a clip with an EHX Nano Muff Overdrive (69 Muff Fuzz):
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As you can tell the Nano Muff accentuates the mids, which makes the wah really cut.
Here's a clip with an EHX Nano Muff Overdrive (69 Muff Fuzz):
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As you can tell the Nano Muff accentuates the mids, which makes the wah really cut.