Buying a Used Guitar: The Inspection Checklist

What to Check Before You Buy a Used Guitar

Check five things, in this order: neck straightness and relief, fret wear, electronics through an amp, finish and hardware condition, then decide whether any problem you found is a cheap fix or a reason to walk away. Do it out of order and you'll spend ten minutes admiring a finish before finding out the neck is twisted.

Why Right Now Is the Best Time to Buy

Mid-August through mid-September is the single best window of the year to buy a used guitar. College students, parents covering fall expenses, and musicians who played summer gigs and now need to cover fall bills all turn into motivated sellers who need the cash more than they need the guitar. That doesn't change what you should check — it just means more listings worth checking are about to show up.

Start With the Neck: Bow, Twist, and Relief

The neck is the most expensive part to fix or replace, so rule it out before you get attached to anything else about the guitar. Hold it at eye level with the headstock pointed away from you and sight down the edge of the fretboard toward the body, the way you'd sight down a pool cue. You're looking for two different things: a slight, even forward bow (called relief) is normal and adjustable; a neck that curves to one side, twists like a propeller, or bows backward is a structural problem that may not be fixable at all.

Once it passes that eyeball test, measure relief properly. Fret the low E string at the first fret and where the neck meets the body, then slide a feeler gauge under the string at the 7th or 8th fret. Acoustics should show 0.008″-0.012″ of gap there; electrics run straighter, 0.005″-0.010″. Our fret buzz diagnosis guide covers what happens when relief is outside that range and how each pattern of buzz points to a different cause — useful both for judging this guitar now and for troubleshooting it later.

A back-bow or a twist doesn't always mean walk away immediately, but it does mean a luthier needs to look at it before you commit to a price, and the estimate should come off the asking price, not out of your pocket afterward.

Fret Wear: What's Normal and What Isn't

Every played guitar has some fret wear — that's not a red flag by itself. Look for deep grooves cut into the first few frets (heavy first-position playing), flat spots where a fret has worn from round to flat, and any dead notes when you fret and pick each note up the neck. Sharp fret ends poking past the fretboard edge are cheap to file down and shouldn't scare you off. A neck's worth of flattened, grooved frets on an otherwise great-playing guitar usually means a refret is coming eventually, which is a real cost to factor into your offer, not a dealbreaker on its own.

Test the Electronics Through an Amp, Not Just Unplugged

If it's an electric, plug it in before you decide anything about the electronics. Strumming unplugged tells you nothing about crackling pots, a dying pickup, or a bad ground — all of which are inaudible until there's an amp to reveal them. Roll the volume and tone knobs through their full range while playing and listen for scratchiness or the sound cutting out; wiggle the cable at the jack to check for a loose connection. Our electronics maintenance guide covers fixing exactly these symptoms once you own the guitar, and most of them are a five-minute job with the right cleaner rather than a reason to negotiate hard.

Check the pickup selector switch in every position too, and if the guitar has active electronics or onboard EQ, ask when the battery was last changed — a guitar that's been sitting in a shop for months can have a dead one.

Finish and Hardware: Cosmetic Wear vs. Structural Red Flags

Most scuffs, buckle rash, and finish checking are cosmetic and are exactly why a used guitar costs less than new — they shouldn't move your offer much. What should: cracks that follow the wood grain rather than just the finish, a bridge that looks like it's lifting or separating from the top, glue seams that have opened up, or rust on frets and hardware that suggests the guitar sat somewhere damp. Our guide to finish types explains how nitro, poly, and satin finishes age differently, which helps you tell an ordinary decades-old finish from one that's actually failing.

Bring a cloth and wipe down a grimy body before you judge the finish underneath it — a microfiber cloth takes thirty seconds and clears up a surprising number of "is that a crack or just dirt" moments on the spot.

Playability and the Walk-Away List

Once the guitar has passed the structural checks, play it. Does it sit comfortably against your body, can you reach every fret without straining, does it stay roughly in tune as you move around the neck? A clip-on tuner clipped to the headstock during the test lets you check intonation up and down the neck instead of trusting your ear alone, which matters more on a used guitar than a new one since nobody's verified the setup recently.

Keep a short mental list of what actually means walk away versus negotiate: a twisted or back-bowed neck, a cracked headstock (even well-repaired ones affect resale and can fail again under stress), a separated bridge on an acoustic, or electronics problems on a guitar you can't test through an amp before buying. Everything else on this list — relief, fret wear, cosmetic finish issues, a crackly pot — is a known cost you can put a number on and negotiate against, not a reason to lose the guitar over.

Once You've Decided to Buy It

A guitar that passes this checklist is a good buy at the right price, and the checks you just ran double as the baseline for owning it. Write down what you measured — the relief, any fret notes, how the electronics tested — so you have something to compare against later instead of guessing whether a problem is new. Our first 30/60/90-day checklist picks up exactly where this one ends, and our full care guides go deeper on setup and maintenance once the guitar is home and settled in.