Cryotweaks silver refer mk ii or.DH labs air matix

Im thinking about trying the cryotweaks for my DAC to Preamp but am wondering if its worth it.I had tried the HGA silverlace but the air matrix had a much better soundstage and better clarity.Just better synergy.I do have air matrix going from the pre to the monoblocks also.Soooo, has anybody used the cryos and what did you think of them??I cant find any detailed info on how these are built..