Grannyring, I did a lot of resistor comparisons including the Duelunds when I was trying to get the very best sound out of the crossover for my high-efficiency speakers, and I am pretty sure I reported my conclusions somewhere in this long thread. Good luck on finding them though! The bottom line was that the standard Duelund and the CAST resistor sound very different. The standard has a tonal balance skewed to the warm and dark side of things, and the CAST is pretty much the opposite since it is very lean in the bass with fairly bright treble. The CAST also sounds "wispy" in the highs; HF sounds sort of float around in a pretty fog. After a lot of listening to each one and to combinations of the two Duelund types, I finally concluded that the most true to life sounding resistor is actually a Mills 12w wirewound. The 12w Mills resistors changed a couple years ago. I prefer the older black body Mills; the newer brown body version is a bit smoother in tonal balance but it doesn't sound quite as detailed or lively as the black body version. However, I would gladly choose either of the Mills 12w resistors over either of the Duelunds. By the way, if you want to try the Duelunds, and one of my values will work for you (5.0, 7.5, and 10.0 ohms) send me a pm.