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Seymour Duncan Hot Stack Plus (STK-S9b) vs Seymour Duncan JB Jr. (SJBJ-1)

Photo: Seymour Duncan

Seymour Duncan Hot Stack Plus (STK-S9b)

bridge Strat single-coil

77 match

high confidence

Photo: Seymour Duncan

Seymour Duncan JB Jr. (SJBJ-1)

bridge Strat single-coil

Compared with the Seymour Duncan Hot Stack Plus (STK-S9b), the Seymour Duncan JB Jr. (SJBJ-1) has hotter output and a ceramic magnet (punchier, more aggressive).

Specs side by side

differs marks specs where they part ways

Spec	Seymour Duncan Hot Stack Plus (STK-S9b)	Seymour Duncan JB Jr. (SJBJ-1)
DC resistancediffers	20.26k	16.09k
Inductancediffers	9.18 H (compiled)	10.23 H (measured, 1 reading)
Magnetdiffers	Alnico 5	Ceramic
Coil	Hum-cancelling	Hum-cancelling
Resonant peakdiffers	3.23 kHz (Seymour Duncan's own test load)	3.6 kHz (Seymour Duncan's own test load)
Bass (tone chart)differs	5 / 10	4 / 10
Mids (tone chart)differs	7 / 10	6 / 10
Treble (tone chart)differs	4 / 10	5 / 10
Slot	bridge Strat single-coil	bridge Strat single-coil
Traits	high output, dark, mid-forward, noiseless	high output, dark, tight lows, tight & aggressive, noiseless

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

measured inductance

Magnet

Alnico 5 vs Ceramic

Coil

100

same coil type

Brightness

tone charts on the same scale

Mids

tone charts on the same scale

Bass

tone charts on the same scale

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