Interesting article. The PrimaLunas get such rave reviews but I'm beginning to question theire overall reproduction of music. I had a pair of Tekton Design Lores and they did better than the Lintons (tight bass) but still not what I was looking for. (and the wife got tired of looking at them)I have never had a pair of speakers that sounded so terrible right out of the box (Lintons). I did remove the foam I had between the speakers & stands and this did improve overall sound. Less "boom" but still up front mids and not much air on top. Tried 4 ohm & 8 ohm taps on the amp, right now connected to 8 ohm taps. jbhiller informed me that he installed a pair of Cifte 12AU7s in his PrimaLuna and this helped especially with air on top. I'm getting a little discouraged with buying $200 - $300 tubes in experimenting with not much success.I did have a pair of French Radiotechnique 12AU7s (Lores) with no luck at all. Brimars better. I'm really trying to make the PrimaLuna work as it is a quality product, point to point & auto biasing, etc. So I'll give the Lintons some more time and maybe try the Cifte tubes.