upgrade is back

[RebelMan]

I think it would be very instructive for both the sceptics and the believers to have available some sample files that were made with the different Devialet amps: the same music sample played through the different amps and DA converted with good quality from the speaker outputs. If all the resulting files turned out to be identical it would certainly be enlightening - and if they weren't, that would also be very interesting (and perhaps would drive even more people to upgrade upon listening to the differences).

Interesting theory.  Although it would be difficult to control.  Access to anechoic chambers is slight.