ss amps with variable input sensitivity

KP to my curiosity and for the sake of my personal education please tell me what is the neccessity for such amp with variable sencitivity?
Thanks!

Hello, Ral, nice thread transition, eh?

Marakanets, I'll abridge the XO thread:
Alber suggests I passively biamp my vr-4's.
Rogue 120 magnums on top.
Since I would to be using an active XO, I need bass amp(s) with adjustable gain.

KP

KP, available on Ebay almost all the time is a second hand Carver AV-705x, 5 channel amp with gain controls for each channel. If you use only two channels, it puts out 180 watts per. I just bought one and have listened to it some now, and it is as uncolored an amp as you can find with plenty of power. Really nothing to criticize about it at all. Easy to buy and sell on Ebay, so you could try it and if for some reason you found it unsatisfactory. it wouldnt cost much to resell it.

DEFINITELY THE PARASOUND OFFERINGS!!!! Most of the Parasound models offer adjustable input volume pots, and are simply superb bass amps! Infact, the Parasounds, if anything, are really well known for their solid bass reproduction! The are very good sounding solid class B amps on their own mostly, but also shine when used to driver bass on biamp and subwoofer set-up's!
If you are doing it right, you could use a very high refined amp on the top, and the parasound on the bottom, for absolutely superb results in just about every conceivable instance!...that being if your speakers sound good biamped in the first place!
good luck

OK, so if the Rogues have a sensitivity of .83v, and the Parasound that of 1.0 this means that the Rogue will play louder at any given volume setting than the Parasounds; correct?

Also, I imagine that the sensitivity adjustment on the Parasound can only attenuate the signal, not boost it.

In this case, this combination would not be practical. question mark.

KP