Increasing the gain K2573

What components need to be changed in order to increase the gain of the K2573 RIAA preamp?

I have a 1950’s car record player I am interfacing to a car stereo and while the K2573 is amplifying I need just a bit more gain to match the levels that come out of a CD player.


You could try and reduce the value of R8 and R9. Sorry, no values

Will changing the values of R8 & R9 change the RIAA equalization?