I have listened extensively to both speakers and have an order in for a pair of 2805s. Even assuming that they are identical speakers- the 2805s are superior in their framing and bracing. It is like comparing Maagnepans that flop around on their stock stands vs. a pair that is heavily braced. The bass is less smeared- deeper and more solid. Everything sounds faster. I agree you can take a pair of 988 and w/ proper bracing make them sound like 2805s. The pricing scheme is also a little ridiculous in that the 2905- w/ two extra panels costs only 2k more.
Quad 988 versus Quad 2805
I am soliciting opinions from owners of both speakers, or individuals that have heard both in the SAME system. The newer version obviously looks more rigid and, in my view, more attractive. However, the difference in price between a used 988 and a new 2805 is very significant. For those who are familiar with both, what, if any, sonically significcant differences exist?