My KORG PME-40X quest is finally over!
I received a somewhat beat-up looking, but perfectly working KDD-501 Digital Delay, the last real effect that I haven't had from this series (I only didn't own the "External Selector" so far, but that's only a signal loop that I don't count as an effect).
It is a great sounding module, very much like the BOSS DD-2. It is built around a big NEC chip like the modulated delays inside the '80s KORG synthesizers DW-8000* and DS-8 (I have both and the delay fattens everything up). The controls are a 1:1 copy of the BOSS DD-2, but there's an added High Cut slider - a very cool fundtion that makes the delays sound more "natural" and it makes the original signal stand apart from the effect sound.
Now my effect module hunt is pretty much over. I would like to purchase a second KDW-301 Dist Wah (a very cool auto wah, which I call the "poor man's Mutron III") or a fourth KAD-301 Analog Delay. This series is awesome and I love to use it live on stage which I have done a lot throughout the last years.
*the DW-8000 was the world's first synthesizer with a built-in digital delay