So as you can see this talk about active preamps being able to control the cables capacitance, is a huge furphy, thought up by active preamp makers to aid in their product sales.Almost any audiophile on this forum has heard interconnect cables make a difference. In fact that is why there is a +Billion$/year cable industry in the US. This fact is incontrovertible.
It is the the fact that cables sound different that is why a good line stage is helpful- it is the artifact of those cables (IOW, not just capacitance) that a good line stage can control or virtually eliminate. Cheesy line sections and passive controls cannot do this.
If one needs an example of what I'm talking about, just look at almost any recording made in the late 1950s during the golden age of stereo recordings. At that time, there wasn't an exotic interconnect cable industry in the US (that wasn't to happen until years later when Robert Fulton produced the first high end interconnect cables in the late 1970s). Yet somehow Mercury, RCA, EMI, Decca and others were able to send delicate microphone signals up to several hundred feet apparently without serious degradation.
So apparently the technology to do that was around in the 1950s. A tech that is also not available to passive controls. It was done with active circuitry, with real engineering talent behind the design.
So when I say a 'good' line stage, I'm referring to one that is properly designed to include minimizing interconnect cable artifact as one of its goals. They are out there- you just have to look.