I have an Acoustic Signature Final tool turntable with ARC VT 100 MKII Tube amp;Arc LS-15 preamp ; an Anthem phon preamp with Martin Logan Ascent speakers.
The turntable has a Rega rb 250 tonearm and I am presently using a Grado Gold cartrdige.

Any recoomendations for this set up? The Grado is ok but "thin" in the midrange and since I just got this beast (turntable) I probably should go better.

Your ideas are appreciated. Thank you in advance.