Bass And Guitar Amp Combined A electric guitar pickup is essentially just like a powerful microphone coil. For decades, active microphones have been sent with the style coil attached with the principal of the microphone's transformer, and maybe not referenced to soil (‘floating'). The microphone's case is usually linked to the cable guard, which is linked to the mike amplifier's floor (see Rane's web site for more discussion).
By and big, energetic microphones are very quiet devices consequently of the combination of transformer isolation and balanced, floating sign lines for the duration of, in addition to protected, humbucking coils.
So why don't you guitars? Instruments are notoriously plagued by noise. Humbucking pickups are just an incomplete (though essential!) solution. The most obvious alternative is to float your guitar collection to a healthy result, being a microphone. The same strategy was printed that 2001 patent request like this Bass And Guitar Amp Combined?