I own the Prelude II's and they are totally kicking butt in my system.
As I see it you have two areas for improvement. As I recall, the AM Spellcaster cables were very bright and not well-balanced in my system when I tried them. I would try some different interconnects for sure.
I'd also consider getting rid of the Creek. It may be detailed and clear, but I'm sure it's far from harmonically natural and pure.
My room is smaller than yours at 11 x 14, but I've had very gratifying results driving the Preludes with an Antique Sound Labs 1003DT amp, and even better results with the PrimaLuna Dialogue Two. The Dialogue Two really gets it done and can play the Preludes surprisingly loud without losing its composure. If you have a turntable, I'd definitely spring for the MM phono stage. It's fantabulous and then some.
I was using a Kavent A210 integreated hybrid amp for a while with pretty good results (similar to the Vincent) but I like the ASL amp a bit better and the PrimaLuna a lot better.
I've tried the Preludes with solid-state, tube/MOSFET hybrid, and tube amplification and I have to admit that they really strutt their stuff with a good tube amp. Don't forget to try different interconnects!!!
As I see it you have two areas for improvement. As I recall, the AM Spellcaster cables were very bright and not well-balanced in my system when I tried them. I would try some different interconnects for sure.
I'd also consider getting rid of the Creek. It may be detailed and clear, but I'm sure it's far from harmonically natural and pure.
My room is smaller than yours at 11 x 14, but I've had very gratifying results driving the Preludes with an Antique Sound Labs 1003DT amp, and even better results with the PrimaLuna Dialogue Two. The Dialogue Two really gets it done and can play the Preludes surprisingly loud without losing its composure. If you have a turntable, I'd definitely spring for the MM phono stage. It's fantabulous and then some.
I was using a Kavent A210 integreated hybrid amp for a while with pretty good results (similar to the Vincent) but I like the ASL amp a bit better and the PrimaLuna a lot better.
I've tried the Preludes with solid-state, tube/MOSFET hybrid, and tube amplification and I have to admit that they really strutt their stuff with a good tube amp. Don't forget to try different interconnects!!!