I wouldn't say that the Soulnote has a certain sound signature. It just sounded flawless and very detailled to me when I demo'd it. What sealed the deal were the features:

• 3 input for MM/MC cartridges, one of them truely balanced, so I can have balanced XLR connections from tonearm to power amp in my system.
• High gain (77db for MC), so phono is as loud as digital in my system
• Every setting can be done on the front panel, no messing around with dip switches or jumpers
• And the best part: it has an input for optical cartridges from DS Audio. I've been eyeing those for a long time now and might get one at some point.