As to sonic improvements,I am no golden eared expert and, frankly, rarely comprehend some of the terminology some reviews use (" the resonance was altogether chocolatey if a bit chalky and billowy") Huh?
My measure? - I put on Sara K "Horse I used to Ride" and she is in the room with me. Pure, detailed to the point of hearing each pluck of the guitar strings ( including one or two off notes). Her voice just goes on and on. I fell like I should get her a glass of water when she takes a break between songs. Much of this was there with the SA-8004, but it seems as if every element of the music is more in the room with me.
Sorry I cannot be more specific, but hope this helps somewhat.
My measure? - I put on Sara K "Horse I used to Ride" and she is in the room with me. Pure, detailed to the point of hearing each pluck of the guitar strings ( including one or two off notes). Her voice just goes on and on. I fell like I should get her a glass of water when she takes a break between songs. Much of this was there with the SA-8004, but it seems as if every element of the music is more in the room with me.
Sorry I cannot be more specific, but hope this helps somewhat.