Noticed something on my 4005e

[SSINTENSE]

When I play right on the fret, it will still sound the note but the note will sound a little more quiet and bass like. I can't really explain it.

Is this a known technique or just the sign of a good setup? My other basses fail at that.

[Thunder Pulse]

That happens on every bass I've ever owned.

[Beginner Bass]

It's because your flesh is actually muffling the sound some, because some is touching the string on the vibrating side of the fret.