Ok, so the previous 2 SLP05's where with my old speakers before the Andra II, which were the Nautilus 801. With that said, the 801 was bolder and brighter sounding on the top end, which I "feel" that the SLP05 was a great match. Now, the Andra II is a little warmer and heavier in the mid/mid-bass but softer in the top end. Therefor this is why I'm trying to get a little less warmth in the preamp. I really like these SA-103's amps and not sure I can let them go right now vs finding a better preamp to match up.
Yes, looking for just a little more open "airy" sound with a little less full mid/band since the speakers are already thick in that area.