Jay Mitchell
Fractal Fanatic
This is not my position. It has already been pointed out that the 2048-point feature allows for stereo 1024-point cabs in "Lo-Res" mode, so now you can place four 1024 cab sims in your signal chain. That is a substantial improvement. Also, there are other uses for IRs besides cab sims - the acoustic guitar thing is one - in which 2048 points could potentially offer a benefit.Why else would Cliff tout the 2048 rez as a feature if like Jay says it makes no difference. Cliff must know this.
The cautionary note I'm trying to get across is that you are not going to hear improvement in the vividness of an impulse response of a guitar cab because of the additional points. If a cab IR sounds a lot different in 2048-point form, there's something wrong with it, because it's got more "late" energy than is ever present in just the signal from a cab (i.e., one with no room reflections).