I bought the Pioneer speaker set designed by Andrew Jones, with two towers, a center channel and two bookshelf speakers for side/rear placement. And the subwoofer. I read the reviews of Stereo Dave's modification of the sub, so I was interested. On speaking to Sean Scoggins, who runs Stereo Dave's, I found out they have a "special sauce" to modify these speakers. So, I sent them the towers. Frankly, a significant portion of the cost is in the shipping back and forth. But, even if you double the cost of the speakers, the modification was well worth it. They are much more open sounding, more musical, lighter, more responsive, and more realistic with better separation of sounds and better placement. This is the best-kept secret in audio. I have just sent them the center channel speaker (it has three drivers) for modification - with the towers sounding so good, the center channel was clearly pulling the system down and needed to be as good as the towers! I heartily recommend this service and will send them the other units for modification soon. read more