About VU-02
VU-02 is a standards-correct VU movement with a calibrated 0 VU reference — the slow, averaging kind of meter that shows you loudness rather than peaks. A peak meter tells you whether you are clipping. A VU tells you how loud something actually feels, which is the number you mix to.
It is metering only. Audio comes out bit for bit as it went in and the plugin reports no latency, so you can leave one on every bus without changing the sound or shifting anything in time.
The movement is bolted into the front panel of a piece of 1960s studio gear, in a choice of four finishes, and the whole unit resizes from 0.7x to 2.5x — because a meter you have to squint at is a meter you stop reading.