I’m about to get my upgraded DNA 0.5 amp back and just wanted to share my experience FWIW. I was just going to go with the basic upgrade, but after speaking with Pat I added the gravity base and purple fuses given the significant performance increases they apparently offer. Pat was very straightforward and enthusiastic about the advantages and I didn’t feel at all like he was trying to sell me something but just conveying what they found. Point is, while I generally wait to hear customer feedback or read reviews before making any purchase decisions, I made an exception in this special case, and if someone is interested in the Power Block I’d recommend giving SMcAudio a call because you’ll get the honest straight poop from the guys who make the thing. Also, I’ve never read anything but glowing reviews of Steve’s upgrades and none of them ever seem to be frivolous, so he seems to add them only when he finds something that truly makes a significant improvement. Interestingly, I learned that SMcAudio does development work for some megabuck manufacturers, and in the course of working on these cost-no-object projects they discover esoteric improvements they’d never otherwise find, and that is where a lot of their upgrades come from so they’re all proven before they make it to the SMcAudio upgrade package. I found that interesting. Anyway, just my $0.02, and again FWIW.
