Just received by Alpha Prime upgrades to my Alpha Dog headphones. I was skeptical that the outstanding Alpha Dogs could be very much improved, but boy was I wrong. Initial reaction is this is an excellent upgrade and well worth the investment. As much as I love the Alpha Dogs, the upgrade to the Primes is like stepping from a top of the line mainstream loudspeaker to a genuine high end rig. I am surprised and completely impressed. The Primes sound better in many ways than my mid-6-figure 2-channel rig. Really. Thank you Mr. Speakers. And once again, wow.
By the way, while my ADs were back with Mr. Speakers for the upgrade, I got out my tried and true HD650s. While I enjoyed the familiarity of going back them, they do not compare in any way with the Primes. They are smoked and blown away in every possible category.
Any AD owner thinking of this upgrade: if you can do it, do it. And if you are in the market for a new set of high end phones and wondering if the extra cost for the Prime VS the AD is worth it: if you can afford it, absolutely yes it is.
What amp are you using for the AP?