How We Test Acoustic Guitars

Every ranking on FretVerdict comes from the same hands-on process: real guitars, the same measurements on each one, and the criteria that actually matter when you play day to day. Here is exactly how we reach our verdicts.

We play every guitar ourselves

We do not score guitars from a spec sheet. We buy or borrow each model that makes our shortlist, and we play it the way you would: a mix of open chords, barre chords up the neck, fingerstyle and hard strumming, over at least a week of daily sessions and, for our long-term picks, a full 30 days. Playing a guitar is the only way to judge the things that decide whether you enjoy it, how the neck feels under the hand, whether it stays in tune, how it projects in a real room, and whether the factory setup fights you. A guitar that looks good on paper but plays poorly has nowhere to hide once we have spent a fortnight with it.

The measurements we take

To keep our comparisons fair and repeatable, we take the same set of measurements on every guitar:

Action, at the low E string, 12th fret. We use a string action gauge (a precision steel ruler graduated in 0.5 mm steps) to measure the gap between the bottom of the string and the top of the 12th fret, straight out of the box. This is the single biggest factor in how easy a guitar is to play. We log the figure, and we note what a £20 to £30 setup brings it down to. In our latest test the figures ranged from 1.9 mm on the Taylor Academy 12e to 2.8 mm on the Epiphone DR-100.
Tuning stability, over 30 days. We tune each guitar to concert pitch (A=440 Hz) with a chromatic tuner accurate to 1 cent, then check how far it has drifted at the start of each daily session, in a room held at a stable temperature. We log the worst drift. Our best performers held within 3 to 5 cents, which is excellent and means less time tuning.
Projection and sustain. We strum a standardised open chord and a single open low E from a fixed distance and compare loudness by ear and with a sound-level meter, and we time the sustain of the open low E with a stopwatch from the moment it is struck until it fades below audibility. Sustain in our last test ranged from about 6 seconds on the laminate Epiphone to close to 10 seconds on the all-solid Tanglewood TW40.
Setup quality. We check the neck relief, the nut slot heights, the fret levelling (sighting down the neck and playing every note for buzz), and the bridge and saddle fit. A guitar that arrives well set up, like the Taylor and the Fender, saves the buyer £25 and a trip to a tech.
Weight and dimensions. We weigh each guitar on a digital scale and record the scale length and nut width, because comfort and reach matter, especially for small hands. Our last group ranged from 1.6 kg (Martin LX1) to 2.3 kg (Tanglewood TW40).

How we turn measurements into scores

Each guitar is scored on three axes, each from 1 to 5: tone (projection, sustain, balance and how the top opens up), playability (the action, neck feel, scale length and factory setup) and build (the tonewoods, finish, fret work and tuning stability). Those three scores feed the overall rating you see on each review. Crucially, a high score is not about being the loudest or the most expensive guitar; it is about being the best instrument for the player it is aimed at. A £129 budget guitar can score well for a beginner on a tight budget, and a £649 premium guitar can lose marks for being overkill for a first-timer. We always say who a guitar isn't for, not just who it is.

How we use manufacturer specifications

Specifications are a starting point, not the verdict. A spec sheet tells us whether a top is solid or laminate, what the scale length and nut width are, and what electronics are fitted, all genuinely useful. But it does not tell us how a guitar actually sounds, how it plays once the factory action is measured, or whether the frets are level. So we treat the spec sheet as a hypothesis to test rather than a result to report. Where a guitar lives up to its specification, we say so; where it sounds duller or plays stiffer in practice than the numbers suggest, that gap is exactly what our hands-on testing exists to catch. The rating you read reflects what the guitar actually does in the hand, not what the box promises.

The role of owner reviews

We read widely around each guitar, including the experiences of ordinary owners, because some things only surface over months, a tuner that slips after a year, a finish that checks, a neck that needs a second setup. A pattern of owners reporting the same niggle tells us something a fortnight of testing cannot. We weigh that alongside our own measurements rather than instead of them: a flood of five-star reviews does not earn a guitar a place on its own, and a handful of one-star complaints does not automatically disqualify one. The aim is a rounded picture, our hands-on judgement informed by the lived experience of people who have played these guitars for years.

Our independence

We are not paid by manufacturers to feature or favour their guitars, and no brand can buy a place or a higher position in our rankings. The order is decided entirely by how the guitars perform against our criteria. FretVerdict is funded by affiliate commissions, if you buy through one of our links we may earn a small commission at no extra cost to you, but that funding never influences a verdict. If the best guitar for you is the cheapest one, that is what we will tell you. The full detail is in our affiliate disclosure.

Keeping our rankings current

The acoustic guitar market changes as models are revised, discontinued or replaced, and prices move. We review our rankings regularly, update prices and availability, and swap in newer guitars where they earn a place. If a guitar we recommend is discontinued, we say so and point you to the closest current alternative. We would rather show a shorter list of guitars we genuinely stand behind than pad the page, so a model only stays on our list as long as it remains the best choice for its player. To see our latest picks, head to the best acoustic guitar ranking, and read more about us on our about page.