The Enleum 23R is the opposite of analytical, think rich organic sound. It performs on a higher level than the tube amps that I tried on the CW IVs. I use the 23R as a power amp with my Van Alstine FET Valve CF vacuum tube preamp. I also use a REL S5 subwoofer that blends perfectly with the CWs. Two of the most difficult instruments to reproduce, piano and the human voice are sublime in my setup.
I recommend that what ever amp that you buy, you either trial it first in your own system or buy it from a dealer that will allow you to return it. All the amps that I tried sounded quite different from each other. The amp that I thought would be my favorite match with the CWIV, the McIntosh MC275 VI (I used to own the V5 of this amp), was probably my least favorite. The Rogue Stereo 100 was to forward and aggressive sounding even with my vacuum tube preamp. The BoyuuRange A50 mkIII was soft and too laid back. The Van Alstine 600R hybrid amp (NOS Mullard 4024 input tubes and MOSFET output) was excellent and only topped by the 23R.