Definition
Pad sensitivity is the curve that maps how hard you physically strike a pad to the velocity value the device sends. It determines how your touch translates into loudness.
Example
On a sensitive curve, a light tap already produces a fairly loud note; on a firm curve, you must hit hard to reach full velocity. The same physical stroke can read as a quiet ghost note or a hard accent depending purely on the curve in use.
Why it matters
If the sensitivity curve does not match your playing strength, dynamics fall apart: you either max out every hit or can never get properly loud. A well-matched curve gives you the full velocity range comfortably, which is what makes expressive playing and clean ghost notes possible in the first place.
How to play or configure
Most controllers offer several preset curves (linear, soft, hard) plus an adjustable option. Play your natural soft and hard strokes and watch the velocity meter: your softest should reach low values and your hardest should touch 127 without straining. Pick the curve that lets you do both, then leave it consistent so your muscle memory can settle.
Related terms
Further reading
MPC vs Maschine vs Push compares pad feel across the three devices.