Stageline "N" output

I have just added the Stagline to my non-naim system. It is the "N" type set up for MM. I'm using a Dyna 10X4mkII which has 2.5 mv output. The problem is that I have to turn the volume knob up past two o'clock to get the music moving. Just doesn't sound loud really. Using 90db efficent speakers. Does anyone know what the voltage output (typical) for the Stageline is. My Audiomat needs 1.2 vrms for full output. Also have a type "S" stageline with more gain but loaded for 470ohms wich makes my dyna 10X4mkII sound strange. Rolled off highs and bass problems.
Any ideas?
JC