EMG4794 vs EMG4858 — Compare

EMG 66-8H 8-String Active Humbucker Pickup in Black vs EMG 81X Long Shaft Active Humbucker Pickup in Black Chrome

The EMG 66-8H is purpose-built for 8-string instruments with extended-range voicing, while the EMG 81X is a general high-output metal workhorse designed for standard 6-string guitars with deeper cavities. Choose the 66-8H if you play 8-string; choose the 81X for standard or non-standard 6-string setups.

No sales tax on orders shipped outside California — total cost beats national retailers that charge sales tax in nearly every state.

EMG 66-8H 8-String Active Humbucker Pickup in Black

$139.00
View EMG 66-8H 8-String Active Humbucker Pickup in Black

EMG 81X Long Shaft Active Humbucker Pickup in Black Chrome

$139.00
View EMG 81X Long Shaft Active Humbucker Pickup in Black Chrome

Specs side by side

EMG 66-8H 8-String Active Humbucker Pickup in BlackEMG 81X Long Shaft Active Humbucker Pickup in Black Chrome
Price$139.00$139.00
BrandEMG PickupsEMG Pickups
ConditionNewNew

Why choose EMG 66-8H 8-String Active Humbucker Pickup in Black

  • ✓ Optimized frequency response and magnet pairing for 8-string extended range
  • ✓ Neck position design tailored to 8-string architecture
  • ✓ Alnico V magnet for balanced, punchy articulation across full 8-string spectrum

Why choose EMG 81X Long Shaft Active Humbucker Pickup in Black Chrome

  • ✓ Measured specs provided (4.00V string output, 1.72 kHz resonant frequency, -105 dBV noise floor)
  • ✓ Long-shaft configuration fits deeper or non-standard cavities
  • ✓ Exceptional battery life at 3000 hours with minimal 80 microamps draw
Bottom line: Pick the EMG 66-8H if you own an 8-string guitar and need tone voiced for extended low-end clarity. Pick the EMG 81X for standard 6-string metal rigs or non-standard mounting scenarios where long-shaft design matters.

Frequently asked questions

What's the main difference in instrument compatibility?

The 66-8H is engineered specifically for 8-string guitars with 8-string-optimized specifications, while the 81X is designed for standard 6-string guitars, including those with deeper cavities via its long-shaft design.

Which has better documented output specifications?

The EMG 81X provides detailed measured specs including 4.00V string output, 8.50V strum output, 1.72 kHz resonant frequency, and -105 dBV noise floor. The 66-8H lists general tone character and magnet type but omits numerical output ratings.

Are both suitable for metal and drop tunings?

Yes, both are rated for metal and drop tunings. The 66-8H handles the extended lower frequencies of 8-string drop tunings, while the 81X excels in aggressive 6-string metal with cutting midrange and tight low-end.

Which requires more maintenance regarding battery?

The 81X uses a 9V battery with 3000 hours of rated life (roughly 4 months of continuous use). The 66-8H's battery specifications are not provided in the available data.

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