Capsize Preamp for use with Acoustic

I built a Capsize preamp to experiment using with my acoustic. It has a Fishman magnetic sound hole pickup, not piezo. It is a pretty low output pickup so I was looking for something to clean boost and add a bit of tone shaping. I also added a buffer/inverter for an XLR balanced output. It works great, however, the tone is very dark.
It looks to me that C3 and C5 are the main culprits. Am I correct, if I remove both of them if that would brighten things up? Maybe reduce the sim of C14 as well?
Or suggest a circuit that would work better for this. Thanks.
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