Got the Kenwood up and running tonight. A thorough cleaning of the balance pot with CRC QD (quick dry) Contact Cleaner (deoxit, basically) and then lubing with CRC 2-26 Multipurpose Precision Lubricant did the trick. All while working the balance knob back and forth about 100 times, of course. Hooked it up to the DLKs and actually really like the sound of it. My first impression is that it fills the midrange a little better than the NAD (DLKs are 2-way, two 8" woofers and a small tweeter). It's probably not quite as clear as the NAD, but pretty hard to discern the difference. Power-wise, it seems a great match for the DLKs. Amp is rated at 80wpc (probably goes higher given the 4-ohm speakers) and so are the speakers. For a total $120, a solid-sounding system.
Again, thanks everyone for pitching in to this thread along the way!