Concerto pre-amp vs. the Synergy IIi

Raquel:

Are you basing your comments of the Synergy IIi vs. Concerto on a head to head comparrison that you have done?

I have the Synergy IIi and would like to hear feedback from anyone who has done an A/B with these two pre amps.

Hello:

I am curious to learn more about the improvements made when you added the batteries to your Synergy and a little info regarding the bateries, connections, charging etc.

Also, though the Concerto is a bit cheaper, how did it perform in comparrison to the Synergy IIi?

Thanks

Mike