Even more emails have headed my way since this thread has started which is making me wonder how many listeners have done away with the heavy high mass amps and moved to the newer approach, and what does this mean. It appears that Parts Express alone is selling more amplifiers than most of HEA amp sells combined here in the US. I'm also hearing reports that the Chinese amp market is off the charts and a big part of this is low mass as well.
What's even better news is the folks who once challenged me about sound quality, after putting the challenge of low mass vs high to the test themselves are coming to the conclusion that lower mass systems not only sound better but also play more recordings. "more music content"
mg