If your amp can except a Passive get one .
There are things to consider.Impedance Matching and Sensitivity .Cables need to be low in Impedance also.
These are equated into Gain issues.
The FT Audio Passive preamp gets around some of this by using a special circuit named the Xcoupler.
Other alternatives are made by Creek and Placette.I would shy away from CI Audio.
Good luck!
There are things to consider.Impedance Matching and Sensitivity .Cables need to be low in Impedance also.
These are equated into Gain issues.
The FT Audio Passive preamp gets around some of this by using a special circuit named the Xcoupler.
Other alternatives are made by Creek and Placette.I would shy away from CI Audio.
Good luck!