Which ARC reference component to upgrade?


I have the ARC Reference 3 preamp and Reference 110 amp and am considering an upgrade in the ARC line. I can't do both right now. The question is, which change (Ref 3 to Ref 5SE; Ref 110 to Ref 150) would result in the best improvement in my system?

System:
Ref 3
Ref 110
Wilson Sophia 2
Music Server to Berkeley Alpha Dac 1
Esoteric X01
FMS Nexus cables
mmcghee
What is your current system not doing that you would want your upgraded system to do?
Wow, you feel the need to upgrade ARC Reference equipment? You have the "upgradeitis" disease bad, real bad. Seek professional help immediately. :)
I agree with Onhwy61.
What would you like to see improved.
Speakers are usually the best bang for the buck in an upgrade.
Although I am not a fan of Wilson the Sophia's are a decent speaker
I would borrow some Transparent Cables from a local dealer and see if that fits the bill for the next upgrade
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