Fader Penny Giles and Active Level control

[lio nuite]

Hello

I'm building a portable mixer based on the THAT1512 but i would like to control the level with a fader and add 10db of gain .

I used the baxandall volume control so far with a LM4562 , i'm on bread board .

But may be there is a better circuit , i have no idea ...

Any Hint and how can use a fader with that .

Thanks

[lio nuite]

And i used th schematic from small audio signal . It works fine .