Originally Posted by
grumpy
with that much gain (25Vout/Vin), I would be surprised if the 2nd series EQ wasn't clipping fairly often
at normal listening levels if the music program has much in the way of 15KHz energy. I don't recall if
you've mentioned a test system (pink noise, RTA?), but it's possible to keep pushing up eq and not
get more useful output. An oscilloscope function can help identify this sort of problem (sometimes comes
with RTA-like programs).