"warmth" = even-order harmonic distortion. If you're after this, you can either 1) wash your WAVs through a harmonic synthesizer, 2) use a tube preamplifier stage between your Serato box and the mixer, or 3) use a mixer with tube preamps like the Rane V6.

erhm, If I may be picky... A harmonic wash can certainly enhance your digital music. But actualy a tube amp/preamp or mosfet amplification is the only way to kinda give back this warmth. Even-order harmonics are created by tubes and mosfet, and these are the harmonics that are natural to the ear, that's why it sounds "warm". Other transistor circuitry creates uneven-harmonics which sound "digital/harsh/...". It's not all that bad of course!!! Enhancement can do a lot, but tube/mosfet circuitry is the only true way to add even-harmonics... if I'm correct :oP

hmm what if i get something like this and attach it to serato's output then from there to the dac then into the mixer, will all my wavs be at 24bit 192 Kz?

www.ramelectronics.net

Actually, I don't think that this is going to solve your problem. The "warmth" you are talking about, is nothing more than the charateristics of your needles/tonearm/turntables/mixer-preamps. All these factors will add a certain "coloration" to your sound coming from the vinyl. After using your setup for years, you're used to this sound and this has become "your standard". Using Serato eliminates all these factors and you will now hear the music as it was actually recorded and produced, without all the colorations of the factors I mentioned. Which of course deviates from "your standard" you've been used to for years, that's why it seems to sound a bit flat or cold.

It's the same deal with studiomonitors. Compare a set of great speakers for your hifi you've been listening to for the last 5 years with a set of professional studio monitors. If you try em for the first time, the studio monitors will sound much clearer, but also a bit flat, e.g. a guitar will not sound as "warm". While your hifi-speakers will "rock your world". Altough the studio monitors are the better speakers. Often it takes some time to appreciate them. Once you passed that phase, after have known studio monitors, there's no way back anymore :oP

Basically I think it's just a matter of getting used to the sound. (I don't know for how long you've been using serato) And If you really don't like the sound, you can perhaps look for some extended equalizing or sound processor (Behringer has a fairly decent quality for a midrange price)

But I don't think that another audio interface is going to make it sound better. Aside from the fact that Serato won't implement drivers for 3rd party equipment.

your completely right, i have been messing with my tonearm and calibrating my needle & recently purchesed a discontinued pre-amp mixer to meet my expectations and it has been working and that warmth is there, but i would also like to play the digital mastered files at the highest quality available to see how far digital audio can go when it comes to quality.

Just let your recorded files untouched, without compressor or maximizers, just straight waveforms. in my opinion this helped a lot to approach the analogue sound.