External Build:

The first impression of the Signature Series is surely a good one.  The finish is a high quality glossy black finish with gold trim.  Not always easy to capture in a photograph, the finish is truly remarkable. 

Here is a close-up of the power label.  As is stated, the unit is capable of 160W over the 3.3V and 5V rails,  and 780W spread out over four 12V rails.  This should be more than sufficient for even the most power hungry of systems.

Finally, we have a look at the rear of the Antec.  Much like the Quattro, the Signature Series uses a single 80mm fan on the backside, which pulls air through the grille on this side. 

For good measure, we have a close up of the peripheral connectors.  It's pretty nice that they have labeled each connector with which rail they are assigned to.  The 12V2 is dedicated to the hard wired ATX and EPS connectors.  The 12V3 and 12V4 rails are each hard wired to one PCI-e connector, and to one each through the red sockets, giving a total of four PCI-e power connectors across two rails.  12V1 seems dedicated to the rest of the random peripherals that usually get used in a PC. 

Finally, the cable spaghetti.  The strands with the red connectors are PCI-e 6-pin connectors, and the ones with black connectors carry all of the Molex and SATA connectors.

The Signature Series carries a plethora of connectors, with a 20+4 connector, an older 4-pin ATX connector, an 8-pin EPS connector, and two PCI-e 6+2 connectors that are hard wired, with the rest being provided by the modular interface. 

Overall, the Signature Series has top-notch performance and top-notch aesthetics, a high price, and a couple blemishes.  Whether or not that is a deal breaker for the consumer, will be up to them to decide.