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Seymour Duncan Custom Shop AH Metal Fatigue vs Seymour Duncan JB Model (SH-4)

We found no spec differences between them worth calling out.

Specs side by side

differs marks specs where they part ways
SpecSeymour Duncan Custom Shop AH Metal FatigueSeymour Duncan JB Model (SH-4)
DC resistancediffers16.8k16.4k
Inductancediffersnot measured8.54 H (measured, 3 readings)
MagnetAlnico 5Alnico 5
CoilHum-cancellingHum-cancelling
Resonant peakdiffers5.5 kHz (Seymour Duncan's own test load)
Bass (tone chart)differsno chart5 / 10
Mids (tone chart)differsno chart6 / 10
Treble (tone chart)differsno chart8 / 10
Slotdiffershumbuckerbridge humbucker
Traitshigh outputhigh output

How close on each spec

100 means identical on that spec. The score weighs these, and counts anything we couldn't compare as a typical difference. How scoring works

Output
97
DC resistance (no inductance for one of them)
Magnet
100
both Alnico 5
Coil
100
same coil type

Not compared: brightness, mids, bass (a spec is missing for at least one of them).

Videos

Seymour Duncan Custom Shop AH Metal Fatigue

No videos of its own collected yet.

Seymour Duncan JB Model (SH-4)

Seymour Duncan JB SH-4/TB-4 Bridge Humbucker Pickup Demo Clean, Dirty and Lead Tones (NO TALKING)
John-Ace Llera
DiMarzio SUPER DISTORTION vs Seymour Duncan JB SH-4 - Passive Bridge Guitar Pickup Comparison Demo
Mike Stamper · comparison

What players and reviewers say

On the Seymour Duncan JB Model (SH-4)

The Full Shred is a tad lower in output and gets close to the lead sound of a JB.
El SupremoSeymour Duncan forum (opens in a new tab)
JB is very touchy. It likes the heights about the same on the high and low side.
glip22 · Apr 8, 2016Rig-Talk (opens in a new tab)
Everything on the Seymour Duncan JB Model (SH-4)

Full reviews