This 64-pickup guitar records every string separately – and lets you decide the tone after you’ve played
A guitar with 64 pickups might sound like the product of some gearhead’s fever dream, but this one is as real as they come. Dreamed up by David Wieland of Dark Art Guitars as part of his master’s thesis in electrical engineering, the ‘Polymap’ system takes the idea of a pickup and pushes it to its absolute limit.
“I built a polyphonic guitar pickup system that can record 64 individual pickups simultaneously called Polymap,” Wieland explains.
The platform for all this experimentation is an eight-string, headless Alchemist model with a 26.5” scale length. The guitar pairs a swamp ash body with a striking maple burl top, though much of that wood has been carved out to make space for what Wieland describes as a “giant hole” of electronics.
And it’s what’s packed into that cavity that really sets this thing apart.
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At its core, Polymap completely rethinks how a guitar signal is captured. Instead of blending string vibrations into a single output via two or three pickups, Wieland’s design captures each string – multiple times – as isolated data.
“The basic idea was to build a guitar that doesn’t record the kind of finished mixed output signal, but instead a lot of information about each one of the strings,” says the engineer. “Now, this is a very fancy way of saying that instead of two or three pickups, we have a few dozen that are only picking up one string each.”
The number didn’t land on 64 by accident either. Wieland opted for eight pickups per string across all eight strings, essentially creating multiple ‘listening points’ along each string’s length. Think of it as having a neck pickup, bridge pickup and everything in between… all at once, and all separately captured.
“Because we want to record all 64 pickups simultaneously without mixing them, the only real choice was to digitise them inside of the guitar,” he explains. “This means that we essentially built a 64-channel audio interface integrated into the guitar that then sends out one single digital signal to the computer.”
Those signals are handled via Cycfi Research pickup capsules, routed through a control board that buffers each signal before sending it to 64 individual analogue-to-digital converters. From there, everything lands in your DAW.
“Inside of the computer, we can take those 64 audio channels and get them into a DAW,” he continues. “In order to do anything useful with them, we wrote a VSSD plugin that allows you to mix all of these signals together, apply various effects, and then get a stereo output that you can listen to on just regular headphones.”
For guitarists, that’s where things start to get especially interesting. Instead of committing to pickup selection, tone and effects on the way in, you’re capturing raw string data, and deciding everything in post.
“Now, because we get the raw data into the DAW, this means we are actually recording the raw data and not the mixed output,” Wieland says. “So, all of the effects and the choice of which pickups are active can be made after it is recorded.”
In practice, that opens up a level of flexibility that conventional guitars simply don’t offer. You could track a part once, then audition different pickup positions after the fact, spread individual strings across the stereo field, or route low strings to a bass rig while sending the upper strings through a guitar amp. Multiple pickup positions per string can also be blended and delayed to create physically grounded spatial effects.
“This makes it a really powerful recording tool,” says Wieland.
And as the Polymap project puts it: “The guitar no longer has a single analogue output but becomes a spatially mapped instrument.”
Check out Wieland’s wild creation in action below.
Learn more at Dark Art Guitars.
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Source: www.guitar-bass.net
