Preserve the arrival condition, test the agreed functions systematically, and document a clear approve, revise or reject decision against the actual sample.
An electric guitar sample should be evaluated against an agreed specification and recorded test conditions before it becomes a production reference. A quick play-through may reveal that you like the instrument, but it can miss a faulty selector position, an inconsistent fret or a difference from the requested specification. A sound review separates arrival condition, setup, functional performance and personal preference. This workflow is a proposed buyer evaluation method, not a claim about Gusto’s internal inspection procedures or a universal pass/fail standard.

Product reference: GTST-03. Inspection findings must come from the actual identified sample, not a catalogue photograph.
Identify the electric guitar sample and its approved revision
Record the model, serial or sample identifier, specification revision and date received. Photograph the instrument, packaging and supplied accessories. Keep any supplier note listing substitutions or unfinished approvals. If the sample differs from the requested version, identify that difference before you use it as the reference for a production decision.
Check for visible shipping damage and document it before performing setup work. Distinguish damage to a carton from damage to the instrument; one does not automatically prove the other. If the package has arrived from a substantially different environment, follow the maker’s unpacking and acclimatisation advice. Do not create an arbitrary universal waiting period or conceal an arrival problem by immediately adjusting the guitar.
2. Establish two baselines: received and prepared for testing
Write down the as-received tuning, apparent string condition and any obvious setup issue. Then record the condition in which the playing test will actually take place. If strings are changed or a technician corrects the setup, preserve both records. Otherwise a sample that needed substantial work can later be remembered as having arrived ready to play.
State the exact string product, gauges and tuning used in the test. D’Addario’s string-tension explanation identifies pitch, gauge and scale as relevant variables. A comparison made with different strings or tunings can confuse a setup preference with a difference between instruments. Keep those conditions visible in the report.
Use a known working cable, tuner and amplifier. Begin with a clean sound and moderate listening level. A noisy cable or strongly compressed sound can distort the evidence you are trying to collect. The purpose is not to produce an impressive demonstration; it is to make faults and useful behaviour easy to recognise.
3. Measure with a method, not just a number
Action and relief readings need the measurement location and string condition alongside the value. PRS’s official relief guide, for example, describes checking the gap at a specified fret with the string held at defined positions. That demonstrates why an isolated reading without a method is difficult to compare. Its specification is not a Gusto acceptance limit.
Agree model-specific targets with the supplier or technician before using measurements as rejection criteria. A player with a strong picking attack may need a different setup from a light-touch player. Record the instrument’s playing orientation, tuning, measurement tool and positions used so a follow-up review can reproduce the conditions.
Do not adjust a truss rod or bridge merely to see whether it moves. This review is primarily observational. If a concern requires adjustment, have the appropriate technician follow the maker’s instructions and record the work. An unexplained intervention can damage the sample and make the original fault harder to assess.
4. Play every string at every fret
Use a consistent attack and move systematically from low to high positions on each string. Note the exact string and fret for an unwanted rattle, dead note or abrupt change in response. Then repeat that location to establish that the observation is consistent. A general comment such as “buzzes somewhere near the middle” is hard for a supplier to investigate.
Separate light acoustic mechanical noise from noise that interrupts the required amplified part. Test at the agreed playing intensity rather than alternating between a delicate touch and an unusually forceful strike. The sample should be evaluated for its intended use, with the limitation clearly stated if only one playing style was tested.
Next try bends and vibrato in the registers you use, including a sustained bend to a known pitch. Listen for choking and check whether adjacent strings remain controllable. Add first-position chords, barre chords and upper-register phrases. This covers different geometry demands instead of treating a fast scale run as proof that every playing task is comfortable.
5. Check tuning behaviour and intonation separately
First establish a stable open-string reference. Play the agreed phrases, then recheck tuning. If the model has a moving bridge, test the intended arm movement according to its instructions; do not perform extreme operations simply because the instrument has an arm. Record which strings shift and under what action, rather than assuming the tuner is at fault.
For intonation, compare the relevant harmonic and fretted note carefully with a tuner, avoiding excessive fretting pressure. Fender’s setup guide describes a twelfth-fret comparison after other setup work. Use the appropriate method for the instrument and add notes in the register used by the music. Do not expect every equal-tempered chord to show a mathematically perfect reading in every context.
If reporting a deviation in cents, include the string, note, attack and tuning conditions. Agree the acceptable criteria with the supplier rather than inventing a single threshold for all guitars. A result that changes when the player presses harder needs further investigation before it becomes a construction defect.
6. Test the whole control map
Work through every selector position and any push-pull or additional switch. Confirm each against the approved diagram or written matrix. Check volume and tone controls through their travel, and listen for intermittent output while operating them normally. A count of two pickups and three switch positions does not prove that the expected combinations are wired correctly.
Use the same amplifier settings for the first comparison of positions. Expected noise and output behaviour depend on the circuit, so identify a repeatable symptom rather than labelling every single-coil hum as a defect. If a problem is suspected, retest with the known working cable and record a short clip showing the control position and sound.
| Observation record | What to enter | Evidence |
|---|---|---|
| Playing issue | [String, fret, passage, attack and repeatability] | Short unprocessed audio/video and setup record |
| Electrical issue | [Selector position, control movement and symptom] | Control map plus demonstration with known cable |
| Cosmetic difference | [Exact location and approved reference] | Context photograph and close view under normal light |
| Specification mismatch | [Required value, observed value and method] | Measurement photograph or identified part |
| Corrective work | [Who changed what, when and why] | Before/after readings and focused retest |
7. Review the finish, fit and included items
Inspect the instrument under ordinary diffuse light before using an extreme close-up to magnify every surface feature. Photograph each concern with a wider view showing its location. Compare colour, sheen, artwork placement and hardware against the approved reference, allowing only the natural variation or tolerances that were actually agreed.
Check case or bag fit with the instrument in its proper orientation. Verify that the bridge, controls and neck are supported or cleared as intended, and that included tools match the actual hardware. Confirm that the accessory list and instructions describe this configuration. Avoid an improvised pressure test on the case or an unapproved drop test; any shipment testing needs its own agreed method.
Tie the sample record to the selected model in the solid-body electric guitar range. The solid body vs semi-hollow guide helps identify construction differences that should remain explicit when approving a sample against another instrument.
8. Close the review with a usable decision
Use three outcomes: approved against the stated revision, revision required, or not accepted with reasons. List unresolved issues individually, distinguish functional faults from preferences, and identify the evidence needed to close each one. A conditional approval should state exactly what remains open rather than imply that a vague promise of improvement has settled it.
After corrections, repeat the affected tests and any connected checks. Changing strings can require a setup reassessment; changing a pickup or control can require the full relevant switching map to be retested. Preserve the earlier findings so that the corrected result does not erase the work that was needed.
Retain the approved sample identifier, specification, photographs, recordings and final decision together. A single accepted sample is a reference for later comparison, not proof of an entire production batch. Start with a model in the Gusto product categories and agree a model-specific sample review before treating subjective impressions as an acceptance standard.

By Gusto Guitar


