Hey guys. I've been reading this thread off and on for awhile now, so if this has been brought up before, I might have missed it.
How different are the new lambdas to the older ones? I see many classifieds for older systems from the 80s and 90s that are lambdas and they come with like an SRD7 with them for not so much cash. I read on the "battle of the flagships' page that even the sigmas from 1970's were super highly rated even today. I am just curious how much the technology or the sound quality has changed over the years since electrostats have been around for awhile it seems.
Also, it's so hard distinguishing the models in those classifieds because many people just list them as "SR lambda purchased in 19XX." I've seen SRM-1/mk2 for sale at reasonable prices, but I don't know how it performs against the amp that comes in the 2170.
I am curious to find out if it might be better to get one of the older models of a higher model number vs a newer version at a lower model number.