mcintosh c-2300 vs mcintosh c500 phono section


i have a clearaudio innovation turntable, mcintosh 402 amplifier and mcintosh c2300 preamplifier, i love the lp, the phono section in the 2300 is very good, is the phono section in the mcintosh c500 better?, is a good upgrade?
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Ontjesr, how would you characterize the sonic differences between the phono stages of the C2300 and C500t? How much of the difference do you think is a result of running the amp/preamp link truly balanced? In other words, can you compare single-ended to single-ended? I'm also curious about making this upgrade into my MC501. Presently, I prefer the RCAs from the C2300 but, as you say, it's not fully balanced so any advantage is compromised. Thanks.