Got my Spendor D9's yesterday! Early first impressions are that the detail retrieval on the D9's rivals that of the A3 but the A3 does it just a tad bit better. Granted, I am not listening to the A3's on my home setup but my first thoughts are that the D9 does not trail very far behind at all at the top end. Very good detail portrayal on the D9's without ever sounding harsh or shrill. Very easy to listen to speakers that still give that detail fanatic satisfaction.
Midrange is gorgeous. Love guitar, piano and jazz playback on these speakers. So smooth but again, without losing that detail. I know it is so subjective to dub a speaker, "musical", but that is the word that I would describe the D9's as.
Much better low end on the D9's than the A3's in my personal opinion. This is without spikes on hardwood floor. Solid thump that is tight but with impact. I'll be adding the Gaia II's and assessing the difference after I install those shortly.
At the same time, I'm testing out the difference in power cables from the wall to my power conditioner (Niagara 1000). The cord that I am auditioning is the Audioquest Thunder vs my Pangea AC9SE Mk II. First thoughts are that the Thunder lowers that noise floor ever so slightly. The level sounds higher on the Pangea however... As a result, it sounds a bit more "dynamic" but the Thunder performs slightly smoother without any of the rolled highs. Still evaluating but the Thunder is a solid, solid cable.