I have Dave modified with three Farad LPS.
I also use it with Mscaler.
Mscaler made sound more detailed and transparent,.
But it may sound thin in some system.
Although Dave can be used as pre amp with digital volume, I added Margules tube pre to make it more harmonic.
My system does not sound thin.
My conclusion is that Dave and Mscaler could work in some system but not others.
Thomas