hi Vinnie,thks for doing your latest mods on the 70's i sent you.that was fast service.will i need to give those amps a burn time or are the good to go right out of the box?? thks Pat 
Hi Pat,
Right out of the box, they sound better than the 70s. The improvement is that obvious.
However, there are a few capacitor changes made in this upgrade (input and output stages)and these will need 100 - 200 hours of burn-in to sound their best, so expect things to get even better!

This is also applicable to the Signature 30 upgrade to the 30.2.
Best regards,
Vinnie