Hi I have an HK A402 integrated and am wondering if there is any resaon sound wise to get a HK 730?? Other then the tuner are they really the same amp and preamp?? There seems to be mixed opinions on this. The 402 was made by Hitachi correct?? Would like to know for sure before I go looking for a 730 for no reason. I have a 430 and it may even sound better then the 402. The 402 seems a little dry. Thanks,KG.