Classe DR-15 amplifier compared to Classe Dr-9


I have two Classe Dr-15 amplifiers used in bridged mode and was wondering if they compare favourably with the Classe DR-9's. I find the Dr-15's to sound really good, not as fast as today's amps but otherwise very little to complain about. If the DR-15's compare favourably to the Dr-9's I may forget about replacing them. Any input would be appreciated. Thanks.
lornoah
Classe DR-9's/15 I had both amps. The Dr-9 amps are more refine to my ears and with more weight and growl Than the 15. the Dr-15 is a later design/product and has no association with Dave Reich the original designer of the 9 and once owner of Classe. I am sure there are memers who see and hear it another way?
You say"not as fast as todays amps".I wonder if tomorrows are faster than todays and so on where we'll be in say 25 years.I wonder if one day they'll stop going so fast.I love this site,where else would we go with these observations?Sometimes I feel like science-fiction is becoming the norm...thanks for that,cheers Bob
I forgot to apolgize for the hijack of a legitimate question of which I have no answer,thanks,Bob