Jm Lab-which is better?


How much better are the new Be range of speakers versus their own previous generation egMezzo utopias.Can the berylium be inserted into the previous generation speakers with ease?Are there any stark differences bet the 2 generations?
Nreddy
nreddy
Note the favorable review of the 907 in issue 33 of
Hi Fi +, which I just picked up yesterday.
A friend of mine owned both Mezzo Utopias and then Alto Utopias BE (which were a direct replacement in JM lab line to Mezzo). He regreats selling Mezzos.

His system consists of JRDG Synergy IIi pre, JRDG power amp, Audiomeca Mephisto II CD.