Advice on a preamp


I am looking to replace my preamp as part of my next upgrade(itis). I am currently using an Opera Consonance Reference50MkII tube pre into a Sanders Magtech Amp to drive Monitor Audio PL300 speakers (3 way, 4 ohm). Does anyone here have any good experiences with a particular preamp with the Magtech? I listen mainly to Classical, Jazz, Blues & Rock. Cheers
128x128shamus2211
Thanks for your post Melbguy1. I agree with your observations re my current gear and have to say you have recommended some serious kit. I have never come across Vitus in NZ but we have some Pass Labs dealers so will look into this. Not sure my budget (wife) will stretch that far though!!!
YW Shamus. The Pass INT-250 is $12kUS. I crunched some numbers & reckon if you sold your current amps & used up your max budget you would be close. I think the Pass will give you all the qualities you’re looking for & would be a killer amp. The Vitus would have a more refined/transparent top end, but the INT-250 would have a bit more power/control.
Thanks for that Melbguy. I will have a chat with the NZ importer today and see if he can arrange a home demo via one of his dealers (they only carry amps and pre's here in shaky Wellington, no integrated. I appreciate your, and everyone elses input.
I have an Aesthetix Calypso Signature with the Sanders Magtech running Magnepan 3.7i's.  It sounds pretty good.  I was upgrading from an Odyssey Candela.  It definitely yielded some gains.
I liked the Aesthetix Calypso very much. It is easy to roll different tubes as well.

Happy Listening!