In audiophile usage, texture is the physical surface character of a sound — its fabric, as distinct from its tone. It's the fine grain you can almost feel: the variation and grip in a sound rather than a smooth, featureless rendering of it. The author and reviewer Robert Harley frames it as the physical impression of an instrument's sound, its fabric rather than its pitch, and that's the sense reviewers mean when they praise a headphone's texture.
It earns its keep on specific sources. Bass is the headline case: textured bass lets you hear the character of the low end — the growl and string-buzz of a bass guitar, the skin and air of a kick drum, the pitch movement of a synth line. Its opposite is one-note bass, where everything low collapses into the same undifferentiated thump regardless of what's actually being played. On vocals, texture is the rasp, breath, and grain that make a singer sound human rather than smoothed into a sine wave. On strings, it's the rosin on the bow, the bite as the bow changes direction, the body resonance of the wood. Across acoustic instruments generally, it's the finger on the fret, the pick, the air moving through a reed.
A couple of clarifications keep the word honest. In classical music theory, texture means something else entirely — how many independent voices a piece carries and how they relate, and whether an arrangement is thick or thin. In audio reviews, texture is the Harley sense (surface character), while thick/thin usually maps onto note weight, not texture. And texture is related to resolution without being identical to it: resolution reveals fine information; texture is the specific impression of tactile or harmonic surface. A headphone can be resolving yet present that information a little mechanically, with less audible grain; another can be very textured but also exaggerated.
The trickiest neighbor is grain, and the line between them is where listeners disagree. True texture is the headphone revealing the real fabric of a sound. Grain is added coarseness — an artifact riding on top. The catch is that a peaky top end or a lack of treble extension can create a rough, grainy quality at the ends of notes that some listeners perceive as texture or extra detail, when it's really the opposite. So textured is a compliment when it means the genuine surface of the sound is intact — and a trap when the praised texture is grain in disguise.
Tuning can cheat the impression. The presence and lower-treble region (very roughly 1–6 kHz) carries a lot of textural and harmonic information, so a boost there makes texture jump out — more obvious, but often less natural. Good texture sounds like real physical detail you could reach out and touch; bad texture sounds like roughness painted on after the fact.
For a newcomer, texture is best learned on acoustic music played close-up: a solo cello, a fingerpicked guitar, a gravel-voiced singer. A headphone with good texture makes those instruments feel like vibrating physical objects in the room; one without it renders the same notes correctly but flat, as if behind glass.