Best way to warm up the sound

Try a cheap Grado Black to see if the "Grado Sound" does it for you. A grado Red did it for me as a swap for a came with Ortofon.

I know many others will think me a philistine, but in my experience, if you want a truly meaningful, significant degree of change in tonal balance, go straight to the transducers: cartridge and/or speakers. Pay attention to room acoustics and speaker setup, too. Everything else is little more than a minus sign in your checkbook.
-Bob

The cable from the TT to the phono stage is @ 46 inches long . It came from Music Hall .
I could easily go with a 12-14 inch cable for my present setup . The cables from the Phono stage to the integrated amp are copper by Tributaries .
The cartridge says Magic-3 in blue letters on the top and Ortofon on the front in black letters .
The CDP sounds as sweet as ever so I don't see a problem with the speaker or amp set up .
I have an email on the way to Music Hall concerning the load capacitance issue for the Ortofon cartridge .
This is the second reference concerning the transducers offering the biggest change ! hmmm .

Capacitance is 100-400 .

100 to 400 pf is an unusually wide range for recommended loading of a moving magnet cartridge. My suspicion is that the tonal balance of the cartridge will vary significantly within that range.

As a rough guess, the capacitance of the 46 inch phono cable plus the 120 pf input capacitance of the phono stage plus the capacitance of the turntable's internal wiring and connectors is perhaps a bit more than 300 pf.

The lowest capacitance low cost decent quality cable I am aware of is Blue Jeans LC-1, at about 12 pf/foot, and $27.75 for a 1.5 foot stereo pair. Using that cable in that length would probably cut the total load capacitance almost in half, and would be a worthwhile experiment IMO. Even if it didn't solve the problem, having that cable would expand your options in the future if you ultimately decide to go to a different cartridge.

I am assuming, btw, that the connectors on the rear of the turntable are RCAs, as appears to be the case based on the illustration in the manual.

That cable, like most RCA cables that are available these days, does not include a separate ground wire. You could either use the ground wire of the existing cable for that purpose, while leaving the RCAs of the existing cable unconnected, or else use some plain old 18 or 20 gauge hookup wire, which is readily available at Radio Shack and elsewhere.

If you ultimately find yourself wanting to experiment with higher load capacitances, consider spending $49 on this kit, listed as part number DBP-6 here.

It's certainly possible that doing these things won't fully or even mostly resolve the issue, but even if that proves to be the case doing these experiments will minimize the likelihood that you end up compensating for one inaccuracy by introducing or increasing another one, which is usually not the best way to go.

Regards,
-- Al