Advise please for best system upgrade under $2,000


I'd like to spend about $2,000 or less to update my system on either new or used components. What would you spend it on to get the most improvement? Speakers, CD, preamp, or amp?
I'm currently running all Solid State: Aragon 4004MKII amp, B&K Ref 20 preamp/processor, Sony DVP S7700 for CD and DVD (96khz/24bit D/A) and Magnepan 2.7 speakers. It sounds very good but I'd like to try tubes to get more musicality and depth. I mainly listen to Jazz and Rock(not Hard Rock).
Unfortunately, there aren't many high end dealers here in Indy so I'd probably be buying without auditioning.

Here's what I'm currently thinking:
1. Musical Fidelity X-Ray CD player($1,000) with a separate MF X-10 tube buffer attached($399).
2. ARC, CJ, Cary or other tube preamp ($2,000 or less used here on Audiogon).

Please offer your thoughts. Specific component and model recommendations are appreciated. Thanks.
128x128noble100

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