Audiophile slang
Musical
Also called musicality, engaging
Musical is the word reviewers use for gear that makes them enjoy the music rather than notice the equipment. It usually means a slightly warm, forgiving tuning with good dynamics, and it is as much a mood as a description.
The term is vague by design: it describes the listener’s response rather than the product’s behavior. In practice it tends to attach to Warm-leaning tunings, tube amplifiers and products that soften bad recordings, and it is contrasted with Analytical.
Objectivists dislike the word because it cannot be measured or argued with; others defend it as the only thing that matters. Both are right in their way. On audiophila., owner ratings use defined scales instead, so "musical" lives in the review text where it belongs.