'LP sound' from CDs?
Trust me, from someone who knows, and has achieved exactly that, the most effective way is to buy a quality CD player from the 'heyday' of CD (late 80s to mid 90s), which uses a top-notch transport mechanism, including Philips TDA-1541 chips in the DAC section, and then, in order to upgrade aging internal components (such as caps and resistors), have the CDP modified (as lightly or extensively, as you wish), by someone like Audiocom International, see here:
http://www.audiocominternational.com/content/8-about-us
Mark (from AI) modified my own Sony CDP and DAC (as listed in my signature). He is an expert in CDP and DAC modifications, and the results of his work on the best vintage CDPs are truly mind-blowing. Forget valves in CDPs or DACs, as IME, unless a significant amount of money is spent, they don't work properly in source components and simply act as rather poor sticking plaster.
However, the advice I've given only applies if by 'LP sound' you mean LP sound, when done properly, i.e. devoid of artificial euphony. If you're after a 'warm and cosy', rose-tinted, sound from CD or vinyl, then I can't help you, as that's not something I seek from my own T/T - or indeed my CDP and DAC.
I've always said that the best vinyl replay systems should sound like
good digital - and that's free from euphonic artifice (and clicks and pops, if you use a good record cleaning machine).
Hope this helps, and good luck! :)
Marco.