Badnixie, All binding posts have a sound, so do spades. Some are more pronounced than others. I will give you an example. I owned speakers with very small and hard to access binding post, so, I purchased these big beautiful WBT binding posts. They were huge gold binding posts. They looked like audio jewelry and they didn't even require soldering. Instead each binding post had a set screw to secure the wire. When tightening the binding post there was no concern for twisting because it tighten straight with no rotary motion against the spade or bare wire. I knew these were going to be an improvement. Instead they completely destroyed the sound. With these new connectors the bass was totally gone and the music was lifeless. I reinstalled the original binding posts and the sound was restored. Since then I have experimented with numerous spades, bananas, RCAs, XLRs etc. and I have found all connectors affect the sound. None of them were equal to bare wire. Some are brighter, some are duller and some dramatically change the bass or highs not to mention the affects of soldering. So, if you decide to change the binding posts on your KSA 250 and decide to sell it because you don't like the way it sounds anymore please disclose the modification so I can be sure to avoid purchasing it.