i was wondering about that...but doesn't the jump create a click regardless of how big the jump is? and if you need to jump like 3 or 4dbs, 6 or 8 little clicks will probably be a lot more noticable than just 1.
You won't hear a click no matter what if the design is good. Listen to the V3 when you increase gain by +5db. There'll be a noticeable jump in levels, but not a "click"
As to the second part of what you're talking about, this is pretty much what the same thing as analog vs digital. Analog is smooth, digital occurs in jumps. The more jumps you have, the less you notice it. So a digitized signal at 44.1k will not sound as good as a digitized signal at 96k.
I'll try it in ascii:
________________
/
/
/ analog increase in gain
/
/ y-axis = signal level, x-axis = time
/
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____________
_|
_|
_| digital increase in gain (0.5db gain steps)
_|
____|
So both sweeps increase the gain over time (the time it takes for you to turns the knobs), drawing not perfect, but assume each method brings you from one gain level to the same ultimate higher gain level. The analog sweep will sound smooth to the ear, as it is smooth. The digital sweep will sound smooth to the ear so long as the incremental gain steps are not that large. So with 0.5db steps, it will sound smooth as gain is increased. If the gain steps were 5db, it would not sound smooth, but you would hear definite jumps as it went for example from 0db to +20db. Gain steps of 1 or so would probably sound pretty smooth, above that noticeable. Steps of 0.5db would probably not be noticeable by anyone.