Edigio, in combination with a transformer, I would probably suggest looking into a tube phono stage. I think, the K&K or Art Audio Vinyl Reference would be interesting to look at. One of the biggest jumps in my system was the phono stage/cartridge combination, that really allowed the DPS turntable to shine.
I guess you are in Milano? Allen Wright in Switzerland isn't too far away. Maybe he will sent you a JLTI to try out for 30 days...