It's designed to handle quite high SPLs, so it will need more gain than a 57. That being said, you shouldn't have any trouble getting enough level out of it with the average stock preamp trim pot on most interfaces. If it's difficult to do that and/or noisy, then you may have a dud mic.
I own two D6s and they both work identically, it's a consistent line, but defects happen in every industry.