Mcintosh C2600 preamp tube upgrade


I recently added the new McIntosh C2600 tube preamp to my system. It's paired up with the MC452 power amp along with Sonus Faber Elipsa speakers and Transparent interconnects/speaker cable.
I"m looking for some guidance with regard to upgrading the tubes in the C2600. Should I, or shouldn't I ? 
Also, what brand should I look for and where should I buy them. And finally, is this a diy upgrade or should I have it done at a audio shop? 
I appreciate any guidance all you audiophiles can offer
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Read your manual, that is what it's for.  If you don't have the manual, you can download it from McIntosh for free.

MY C2500 uses 6 12AX7 tubes.  It does not use any other type so I can't help you.
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your best bet is leave the tubes alone once you start changing them you will never be happy i put 1500 dollar nos tubes in mine and i think it sounded better with the original wish id just left it alone