I have a Sonus Faber Concerto Grand Piano; an Aleph 3 amp & a Wadia WT 2000 Transport/X64.4 Decoding Computer. Presently using the McIntosh CR 7 Remote Control Center as a pre-amp. I am thinking of a tube pre-amp like, the Cary SLP 50B or an Audio Electronics Supply AE3. I Will appreciate any suggestions guys? Thanks.........