VTL 7.5 S3 vs Jeff Rowland Corus with PSU

I have the Corus and new PSU as well.  I think it is superlative, but FWIW I don't think bass definition is its strongest suit.  I would be very curious about the 7.5 mkIII as it was my other top choice before going with Rowland.  Pairing it with my 625 S2 was a natural choice but I am still wanting to hear the VTL.

I will be auditioning the 7.5 s3 in my system in the future and comparing to the Rowland. I may be wrong but  my thoughts are that the bass will be better with the Rowland than the Tube preamp. I’ll keep you posted when I hear it.

Mildly OT:  does anyone know what brand 12AU7s VTL uses in the 6.5 II preamp?  Much thanks.

Any vtl dealers in chicago area?