Emax

The Emax II is a great synth and sampler. My first Emax II was actually the first pro keyboard I ever purchased new. I actually had to special order it because I lived in a small market that didn't stock them.
Upgrading RAM is more or less impossible at this point. If you find a 3 or 4 MB unit that has the daughterboard, you might be able to upgrade, but the parts are challenging to track down to say the least.
As for 2MB being enough, well, it is certainly laughable by todays standards, but perfectly useable. The massive transposition range you get with the Emax II is so good that you can create useful analog synth emulations with a single sample centered at C3.
Another useful feature are the various sample rates available. Definitely take the time to read through the manual and digest the sampling recommendations. For instance, for a lot of bass or percussion sounds that don't have a lot of high frequency content, sample at a low rate of 20khz or sample rate convert even lower if you feel the results are acceptable.
It is limiting, but you can accomplish a great deal with a single Emax II. It might even force you to be more creative than you might be if you had every option at your fingertips.

JMMFHO ;-)


Best of luck!