EMG 81Active Humbucker Pickup
The EMG-81 is a high output pickup designed especially for the lead guitarist. The 81 is at its best for high volume overdrive and amps with a master volume. Whether you're playing power rock and roll, or overdriving your amp, there's a razor sharp attack, and incredible sustain for brilliant soloing. If you're looking for exceptional qualities in a rock pickup, the EMG-81 is the one.
EMG Humbuckers unite a number of crucial EMG innovations in the search for a voice that delivers both classic tones and the benefits of modern technology. Each of these pickups includes an integral preamp (an EMG first) which virtually eliminates hum and noise while simultaneously reducing shock hazard to the player. Low impedance design maintains your tone as you change the volume settings at the guitar and preserves your high frequencies even with a long cord.
EMG's proprietary Impedence Modeling (tm) and Dual Resonant (tm) technologies allow for precise tailoring of frequency response and resonance yielding a variety of highly tuned and tweaked tones. Another EMG exclusive, the Lo-Flux (tm) magnetic design enhances harmonics and sustain. We tailor the materials and geometry of the magnets to spread the magnetic field evenly across the strings for a balanced sound.
EMG-81
The 81 was actually developed in 1979 along with the EMG-58. Like most EMG's, it wasn't heavily advertised until 1981. The EMG-81 has the familiar U-shaped humbucking structure but replaces the pole pieces with steel bars and a smaller ceramic magnet. It has become the choice for metal and extreme players alike, Kirk Hammett from Metallica and Kerry King of Slayer to name only two.
Distortion during lead passages is consistent, sustain is long and the breakup fades smoothly. The ceramic magnet in combination with wide aperture steel poles lend a quick attack but the tone stays nice and fat at the same time. Perfect if you're the only guitarist in the band, and need to switch from rhythm to lead and still keep the band moving. Another great thing about the EMG-81 is it's quiet. If you're playing at really high gain the last thing you need is noise.
Technical Info
Specifications
Logo Color: Silver
Resonant Frequency: 2.25 kHz
RMS Output Voltage: 1.25
Peak Output Voltage: 1.75
Output Noise: -91dBV
Output Impedance: 10kOhm
Current @ 9V: 80 Microamps
Battery Life: 3000 Hours
Package Includes: EMG's exclusive Quik-Connect cable, prewired split shaft volume/tone control set, output jack, battery clip set, screws & springs.
A Brief FAQ
What's an active pickup, and why would I use one?
An active pickup is one that uses electronics to improve the sound and enhance its operation. There are a variety of ways to "Activate" a pickup. A simple "buffer" pre-amp will do the trick, but it will also amplify the hum and buzz the pickup produces. Just because a pickup is "active" doesn't guarantee you'll get great results. EMG pickups utilize an internal pre-amp (inside the pickup), which not only makes the pickup louder, it also reduces the noise!
What are the advantages of an EMG pickup?
The greatest is reduction in noise. No longer will the dimming of the house lighting system cause your guitar to buzz incessantly. You can use an extra long cable, or a wireless, and you'll get the same great tone every time.
Why an internal pre-amp?
It's the most efficient way to create an active pickup. All the coil connections are shielded, the pre-amp is shielded, and the output of the pickup cable is low-impedence, which makes it less susceptible to noise. Also, it avoids a spider web of wires and possible loose connections in your guitar and the installation is simple. All the benefits with none of the hassle.
All instrument parts cannot be returned once opened due to the possibility they have been used. This includes all guitar, amplifier, and turntable parts. 
