I thought I would chime in as I have owned similar equipment to you:
I have a set of PSB image 4T (older version of your imagine set), squeeze box touch (make sure you are feeding non compressed files) and a axiom EP500 sub.
I started with a Sony home theatre receiver, moved to NAD separates (T163, T973) and then to a speaker change from the PSB to Dali and a Cary SLI 80. Then played with DAC's a bit.
From my experience, the more SS power you you add the more things " open up" and a tangible improvement is made. Also, with DAC's I was surprised at the difference you could make with one of these units.
So, with your budget I would offer a suggestion of trying to add more power and try squeeze a DAC in as well. Perhaps a NAD integrated like the 375bee on this site for under a $1k and maybe a Dacmagic, which I found helps the bass quite a bit.
Or like me, get into tubes, which this is a slippery slope - but man, for me nothing makes music like these babies. (though I now want to upgrade these to a " better " version, so it never ends)
I have a set of PSB image 4T (older version of your imagine set), squeeze box touch (make sure you are feeding non compressed files) and a axiom EP500 sub.
I started with a Sony home theatre receiver, moved to NAD separates (T163, T973) and then to a speaker change from the PSB to Dali and a Cary SLI 80. Then played with DAC's a bit.
From my experience, the more SS power you you add the more things " open up" and a tangible improvement is made. Also, with DAC's I was surprised at the difference you could make with one of these units.
So, with your budget I would offer a suggestion of trying to add more power and try squeeze a DAC in as well. Perhaps a NAD integrated like the 375bee on this site for under a $1k and maybe a Dacmagic, which I found helps the bass quite a bit.
Or like me, get into tubes, which this is a slippery slope - but man, for me nothing makes music like these babies. (though I now want to upgrade these to a " better " version, so it never ends)