And the sd7, sounds not as compressed? What about the sd60- same as sd9?
A compressor works as a limiter
Thats something totally different then having compressed samples.
The compressor in the high end arrangers is used to give the different instruments in the mix some breathing room to identify themselves.. if your mix is cluttered, a compressor might be a nice tool to use.
Having compressed samples, doesn’t have to be bad, if the compression is lossless... however most older forms of compression like for example MP3 streams are not losless..so you loose actuall sound information..
Another step arranger keyboards need to make is stepping up from 16 bit 44.1khz consumer audio quallity, to the 24 bit 96khz pro studio quallity (192 khz is overated)
But this requires in general 3 times the processing power of the current 16bit 44.1 khz