Guitar tone, explained properly

Set the gain first, then start with bass, middle and treble at 5 and move one control at a time. Cut the band that bothers you before boosting the one you want, because boosting raises the overall volume and tricks you into thinking the tone improved when it only got louder.

Gain sets how hard the preamp is driven and therefore how much distortion the amp makes. Volume sets how loud that is. On an amp with both a volume and a master volume, the first sets preamp level and the second sets how hard the power section works, which is a different kind of distortion with a different feel.

The standard order is tuner, then filter effects like wah, then compressor, then drive and distortion, then modulation, then delay, then reverb. The rule behind it is that each effect should act on a signal that already contains everything it needs to react to, and nothing it should not.

Scooping the mids means cutting the midrange control while leaving bass and treble high, which produces the smiley-face EQ curve behind most classic thrash rhythm tones. It sounds enormous on its own because the ear reads the exaggerated extremes as size.

Humbuckers send a hotter, darker signal into the amp, so they reach a given amount of saturation at a lower gain setting and usually need more treble. Single coils send a lower-output, brighter signal, so they need more gain for the same saturation and less treble to stay comfortable.

Cut the bass further than feels right, keep the gain lower than you expect, leave the mids audible, and use a noise gate. Most amps that supposedly cannot do metal are being asked to make heaviness out of bass and gain, which is where heaviness does not come from.

A record is a mix, not an amp. Layered takes, microphone choice and placement, studio compression, and mastering all sit between the amplifier in the room and the file you are listening to, and none of them are things a knob position can reproduce.

As a boost in front of a high-gain amp, set Drive at 0 to 2, Tone around 5 and Level at 7 to 10. For blues crunch into a clean amp or one on the edge of breakup, set Drive around 5, Tone at 5 to 6 and Level at about the same volume as the pedal bypassed, then clean up with the guitar's volume knob.

For clean, pick the Clean amp type with Gain at 2 to 3, Bass 5, Middle 5, Treble 6 and Reverb around 3. For classic rock, pick Crunch with Gain at 5 to 6 and Middle at 6 to 7. For metal, pick Lead or Brown with Gain at 6 to 7, Bass 5 to 6, Middle 5 and Treble 6 to 7, and add a boost from the Booster section instead of turning the Gain to 10.

Most muddy tones come from too much bass and too much gain for the volume you play at. Turn the amp's Bass down to about 4, lower the Gain until each note in a chord can be heard, check that the guitar's tone knob is fully up, and switch to the bridge pickup before you change anything else.

Gain controls how hard the amp's preamp is driven, which decides how much it distorts. Volume, or master volume, controls how loud the result is. On an amp with both, set the amount of distortion with Gain first, then set the loudness with Master.

Presence adds or takes away upper treble in the amp's power stage, after the bass, middle and treble controls have done their work. Turn it up for more bite, pick attack and definition; turn it down when a distorted tone turns fizzy or harsh. A sensible start is presence at 5 with the treble at 5, then use presence for fizz and definition and treble for overall brightness.

Start with Volume where switching the pedal on and off makes no change in loudness, Sustain at 6 to 7 and Tone at 5, then move Tone before anything else. For a singing lead, keep Sustain moderate and let an amp on the edge of breakup add the rest. For a Smashing Pumpkins wall of fuzz, turn Sustain up to 8 or more with Tone at 5 to 6. For doom, keep Sustain high and bring Tone down to 3 or 4 for a darker, heavier low end.

Set the gain or drive at 2 to 3 and get your volume from the master or channel volume, then start with bass 5, middle 5, treble 6 and reverb around 3. Use the neck or middle pickup for a round clean and the bridge for a brighter one. If the sound breaks up when you strum hard, turn the gain down rather than the volume.

Set the amp just past clean: gain around 4 on an amp with a gain knob, or on a single-volume amp the volume just past the point where it starts to break up. Start with bass 5, middle 6 to 7, treble 5 to 6 and reverb around 3, then use the guitar's volume knob to move between clean and crunch: back to 7 or 8 for rhythm, up to 10 for a solo.

Set the output so that switching the compressor on and off makes no change in volume, and start the sensitivity or sustain control at noon: MXR's manual for the Dyna Comp and BOSS's for the CS-3 both start every knob at 12 o'clock. Turn it down from there for clean rhythm, where it should only catch the loudest notes, and up for a sustained solo. MXR's own sample settings run from Sensitivity a little below noon for a Nashville sound to both knobs nearly all the way up for bottleneck slide.

For a lead, start with a delay time between 300 and 500 ms, feedback for two or three repeats, and the delay level well below the dry note. For rhythm, use a shorter time and less level so the repeats do not blur the chords. For slapback, use a single repeat somewhere around 80 to 150 ms, set almost as loud as the note itself.

Start with the reverb at 2 to 3 out of 10 for a clean part, 3 to 4 for a lead, and 1 to 2, or off, for high-gain rhythm, where it blurs palm mutes. Use a spring or room sound when you want space without pushing the guitar back in the mix, and a hall or plate for slow parts that have room to ring.

Turn the gain down first, then the presence and treble. Most fizz is gain the sound cannot use: past a point, more gain adds a buzzing top end and noise rather than weight. If the gain is past 7, try it at 5 or 6 and raise the middle a step to put the body back.

For classic rock, set the gain around 5, bass 5, middle 6 to 7, treble 6 and presence 5, with the reverb at 2 or less. For hard rock, raise the gain to 6 or 7 and leave the middle where it is. Play rhythm on the bridge pickup, and roll the guitar's volume back to 7 or 8 when you want the same setting to clean up.

Find out what was actually used on the recording, match it to the nearest type of amp you have, set the gain lower than you think, then EQ against the record at the same loudness, one control at a time. Use the pickup the part was played on, and add only the effect the song is built on.

AI guitar tone tools come in four kinds. Matchers such as Tonelify, ToneAdapt, TonesMatch and ToneMatcher take a song and your gear and return knob positions for the amp you own. Modeller AI such as Positive Grid's Spark AI and BIAS X builds the sound inside its own amp models. Capture libraries such as TONE3000 give you real amps as free models, and general chatbots answer anything but do not know your amp's panel.