@freesole
You’ll find detailed descriptions from my auditions of the Magico A3 and Joseph Audio Perspectives in my thread here (along with many other
speakers):
https://forum.audiogon.com/discussions/contemplating-devore-speakers-and-others-long-audition-report...
Yes, the JA speakers are notable for their "disappearing/soundstaging/imaging." It’s one of the things people remark on over and over when you see show reports, and it’s certainly the case - images just do that "floating as if no speaker is there" thing really well. And they sound much larger than they are (they are quite small floor standing speakers).
As for the bass, the JA speakers are surprisingly big, rich and punchy in the bass. They aren’t spec’d as low as the Magicos, but you don’t feel you are missing much. I actually love the bass quality of the Perspectives - it has this beautiful tone and texture to it, and they are fun speakers in terms of giving that "punch" to the sound. That said, they CAN sound a bit "porty" without careful set up or the right amp (that is, just a bit more puffiness in the lower bass). Then again, I didn’t find the bass of the Magico A3 impressed me too much with it’s tightness in the audition I had. It went low, but it didn’t really "groove" for me, like the Joseph speakers or the Devores. But, that’s just one guy’s audition of the Magico A3 (though I really put them through the wringer with tons of music).
Again, the main feature to my ears with the JA speakers is a lack of grain - they sound, as Fremer said in his review of the Pulsars - "unmechanical" in a way few other speakers sound. The purity of voices comes through, and instrumental timbre, like few other speakers I’ve experienced. They are a fascinating combination of "warmth" in the mids/lowermids/bass and "speed, transparency." Everything I hear on them makes me just want to keep listening.
As for the Spendors, I’m really not in a position to say much at all. I only remember hearing some jazz where the sax sounded alarmingly clear, present and natural. And some R&B where I noted the drums had nice punch, guitars very clear and crisp, and an overall very low sense of coloration. They just seemed more together, neutral and more "real" sounding in many ways that much of the other set ups at the same show didn’t quite match. As I have had plenty of listening time (though years ago) with the older classic Spendor models (and I own Spendor LS 3/5s) I was a bit surprised by the Spendors. They definitely sounded like a more modern take on the Spendor sound - the older sound being a bit more soft and comfy, the new sound being more forward with a more vivid sound and "alive" with transients (picking guitar, drums, etc).
FWIW....