Which has a greater effect on music,int.amp or CD?

I am pressed for time so will have to make my comments brief.
I think both the cd player and amp will have equal influence on the sound, but the sound of each should be balanced for optimum voicing.
I am a former owner of an ARC Complete Int Amp.
If by "warmth"; you mean the natural reproduction of the timbre of instruments and voices (without some form of electronic glaze or haze), then I do not think the ARC will do it. You may disagree so by all means listen to one.
That said, I believe there are few ss amps, short of something esoteric and expensive like Rowland that will do what you wish.
I would strongly recommend that you at least listen to a tube amp before making your final decision. It doesn't have to be an expensive tube amp. If money is an issue and you still do not want to try tubes, I would suggest getting an NAD integrated amp and getting a better cd player and Harmonic Tech cables. The NAD won't be quite as transparent as the ARC, but I think it's tonal balance will be more to your liking.
Listen carefully and have some fun. This is supposed to be fun.

Matty....I doubt having both the Complete CD and Amp is "too much". They were designed to go together as unit. If you like the YBA sound, then they should be perfect together.

HD- the 'truth' of the recording can turn in to lies by the time the speakers get a hold of the signal. Ever play the game, telephone? It is more complicated than this (as in this thread), but good components lie less than bad ones. Good components play telephone better.

It may have been a bad idea to post this. I am not debating.

Just a follow up post. Went to NY (Mt. Kisco)today and listened to the ARC integrated and CD w/Hot Rod Kestrals. The ARC's are VERY well built and had a nice smooth sound (a la Kestrals) with Krall, Merchant, etc. However, it didnt do it with rock. With my "From the Cradle" CD from Clapton, It sounded like there was a veil on the music, that I was in the nose bleed seats. With Creed too (yes, I do.) Important find for me out of all of this is that it seems I like more neutral sounding music than I first thought. So, I guess another look at Arcam, Creek, Cambridge, Rotel etc.

One final note, if demoing call and make sure that the dealer you are going to in fact has the brand name you are interested in. The dealer I went to listed YBA in their most recent ad in Stereophile but when asked they said they didnt carry anymore. This is the second dealer I have come across with this issue. Anyway, thank you all for your above comments. On with the hunt....

How about a used Sony SCD-777ES or DVP-S9000ES and a used Manley Stingray integrated. The Sony players are solid in the bass, have SACD capability, very good redbook, and numerous options for modding. Used prices range from $650 for the 9000, to $1500 for the 777. The Manley Stingray is a tube unit that may soften the digital artifacts and provide excellent reproduction, and looks real cool, too. Rated at 50wpc. I've seen used ones for $1199.