Do you know what are the major differences between the two. I can get a 9813 for $200 it was a display in a glass case never used, Should I go for it?Box and warranties, every thing applies with the 9813.
did you mean 9813 or 9815? if so the 9813 for $200 is a good price. good unit. the 9815 added a blue two-line display, and iPersonalize for pre-setting sound environments with things like time correction etc. mostly nothing vital or all that important unless you're really picky about fine tuning a system with a meter. both are good units.