Transimpedance has too much gain?

The Andover Spinstage is about 71 dB of gain if I am remembering correctly and that is more than most MC Phono Preamps.  But I don't hear any tonal emphasis on mine.  It just sounds much much better than it should for the price.  But you might find a benefit from using a linear power supply rather than the wall wart they supply.  I felt it sounded a bit smoother and perhaps less dynamic with a linear power supply and I'm guessing you would find that more pleasing.  Of course even a cheap linear power supply will set you back about half the cost of the Spinstage.

But how do you think it compares to the Sutherland 20/20 in general?  It is nearly a 10x difference in price.  

@gochurchgo I wasn't familiar with that Love album but listening to it on streaming it is easy to see how that guitar could quickly become irritating.  I don't listen to that kind of music but I have had other preamps that produces what I call glare in that same frequency band.  It would only happen on 10-15% of the tracks I played but I couldn't stand it and I ended up selling that gear.  Sadly, all I can tell you is I'm not hearing that with my Spinstage.  Assuming you like everything else about it I would return the unit and get another one.  @lewm's suggestion that there might be a faulty part effecting the RIAA curve is plausible to me.

Also, I think the Lino C only takes balanced inputs.  No idea if your turntable supports that but it has stopped me from trying one.

@mijostyn @lewm Thanks for that info on converting a tonearm to balanced.  I also discovered VPI sells a somewhat overpriced junction box that you can use to replace the RCA box on their turntables.