Same Pickups, Different Guitar: The Gibson Les Paul and SG

In 1961, Gibson replaced the Les Paul with a thinner, lighter, double-cutaway guitar that they still called the Les Paul. The original Les Paul — the man — hated it. He called Gibson and asked them to take his name off it. Gibson complied, and the guitar became the SG. It went on to become Gibson's best-selling solid-body guitar of all time.

This is the origin story of one of the most interesting comparisons in guitar history, because the Les Paul and the SG are not simply different models from the same company. They are the same design idea taken in two entirely different directions, built for two different kinds of players, and responsible for two largely distinct chapters of rock guitar history. The specs on paper look nearly identical. The experience of playing them is not.

What They Share

Both guitars have mahogany bodies and mahogany necks. Both use a set neck — glued in rather than bolted on — with the same 24.75-inch scale length. Both are typically equipped with two humbucking pickups, a Tune-O-Matic bridge, individual volume and tone controls for each pickup, and a three-way selector switch. The pickup circuit is essentially the same guitar, twice. The PAF humbucker, designed by Seth Lover and introduced by Gibson in 1957, is responsible for the core tonal character of both instruments — warm, thick, full in the midrange, with a natural compression under gain that rewards a heavy picking hand.

If you A/B a Les Paul and an SG through the same amplifier at the same settings, some of what you hear is player psychology and some is real physical difference. The real differences, though, matter enormously.

What the Maple Top Does

The Les Paul's defining structural feature is its carved maple top over a mahogany body. Maple is a hard, dense wood with a brighter, more focused tonal character than mahogany. When you combine a mahogany body — which emphasizes warmth and low-mid sustain — with a maple cap, you get something that behaves like neither wood alone. The maple adds clarity and definition to the attack, tightens the low end, and gives the instrument a kind of compressed punch at the front of each note. The mahogany underneath provides the sustain and body. The result is the Les Paul's characteristic sound: thick and warm in the fundamentals, with a sharp, articulate attack and the kind of sustain that hangs in the air after the pick leaves the string.

The SG has no maple top. It is all mahogany, all the way through, in a body that is dramatically thinner than the Les Paul's — roughly half the depth. Less wood means less mass, which means less sustain and a different resonance profile. The SG's tone is brighter and more midrange-forward than the Les Paul, with a rawer, more aggressive quality under gain. Where the Les Paul sounds thick, the SG sounds sharp. Where the Les Paul sustains, the SG barks.

The Weight Problem and What It Costs You

A standard Les Paul weighs somewhere between eight and ten pounds. After a three-hour show, that weight is not academic. It sits on your shoulder and it changes how you stand, how you move, and by the end of the night, how much your back hurts. The density that produces the Les Paul's sustain and warmth is the same density that makes it physically demanding to play standing up for extended periods.

The SG solved this by removing wood rather than adding it. The thinner body, the deeper cutaways, and the absence of the maple cap together produce a guitar that weighs roughly half as much as a heavy Les Paul. Tony Iommi chose the SG partly because the lighter weight was more manageable after the industrial accident that cost him the tips of two fingers on his fretting hand. Angus Young has played SGs his entire career, in part because the smaller, lighter body suits an extremely physical performance style that involves a lot of movement and floor work. The SG goes where you go. The Les Paul anchors you somewhat to where you are.

Weight affects tone in ways that are difficult to separate from player preference. The Les Paul's mass is part of why it sustains the way it does. You are not getting one without the other.

The Neck Joint and Upper Fret Access

The other major structural difference is where the neck meets the body. On the Les Paul, the neck joins at approximately the sixteenth fret. On the SG, the joint is at approximately the twenty-second fret — essentially at the end of the fretboard. This means the SG's neck extends much further into open air before it reaches the body, which has two consequences.

The first is comfort: upper fret access on the SG is genuinely better. Getting to the top three or four frets on a Les Paul requires working around the heel of the neck, which takes some effort. On the SG, those same positions are open and unobstructed. This is why the SG became a lead guitar, partly by design and partly because players discovered they could do things on it that were more awkward on the Les Paul.

The second consequence is that the SG's neck joint is structurally weaker. Les Paul himself identified this as his primary complaint about the design: the neck had too little wood supporting the joint, it could flex when pushed and pulled, and it did not sustain as well as the thicker construction of the original guitar. He was right about the structural weakness. He was less right about it being a fatal flaw — the SG has been in continuous production since 1961 and the joint has proved durable enough for decades of heavy use. But the neck's tendency to flex slightly under pressure is part of why some players find the SG feels slightly less stable in the hand than a Les Paul.

Why Each Guitar Found Its Players

The Les Paul's dominant register in rock history is the blues-rock era of the late 1960s and early 1970s. Eric Clapton used a Les Paul Standard with Cream and established what the guitar's neck pickup — rolled back to reduce treble, turned up into a cranked Marshall — could do in that context. Jimmy Page recorded Led Zeppelin on Les Pauls, using the combination of the maple top's articulation and the mahogany body's sustain to carry riffs that needed to breathe. The Les Paul's weight and warmth suited a style of playing that emphasized sustain, dynamics, and tonal complexity.

The SG found its players among those who needed something different. Tony Iommi's accident left him unable to manage the Les Paul's weight and upper-fret geography comfortably, but the SG suited him perfectly — the neck reached further, the body was lighter, and the all-mahogany construction produced a darker, heavier tone that matched what Black Sabbath was doing. Angus Young chose the SG for its feel and has never deviated from it across five decades of AC/DC records. Derek Trucks plays slide guitar almost exclusively on an SG, finding that the thin mahogany body resonates differently under a slide than a heavier instrument would, with a more immediate, vocal response.

The pattern, if there is one, is that Les Paul players tend toward players who want weight, sustain, and tonal complexity — blues, classic rock, dense arrangements where the guitar needs to fill space. SG players tend toward those who want aggression, speed, and upper-fret access — hard rock, metal, and styles where the guitar needs to cut rather than fill.

The Guitar Les Paul Hated

Les Paul's complaint about the SG was specific. In his own words: the neck was too skinny, the joint did not have enough wood, it did not sustain as well as the original, and you could pull on the neck and change pitch. He told Gibson to remove his name. They did, and the guitar has sold under a different name ever since.

What makes this story interesting is that the SG went on to define a large part of what heavy rock guitar sounds like — not despite being everything the Les Paul was not, but because of it. The thinness Les Paul objected to is what makes the SG feel fast and aggressive. The weaker neck joint he criticized is what gives the instrument its slightly looser, more resonant quality. The lack of the maple top he did not comment on but which removed itself from the design — that is what gives the SG its rawer, more midrange-forward bite.

Two guitars, same pickups, same scale, same company. One was designed carefully and deliberately over a decade. The other was designed in response to declining sales numbers, introduced without the original designer's blessing, and named after a concept — Solid Guitar — that applied equally to both. The one that was designed to replace the other never did. They have coexisted for over sixty years because they are genuinely different things, even when the spec sheet suggests otherwise.

Explore more gear on Sonic City at /gear