Tube amp/preamp for B&W CDM 9NTs

I'm considering upgrading to separates but want to keep my CDM 9NTs. I'm running a Marantz SR8000 now but decided to move strictly to 2-channel audio. My budget is around $3k. I'm also open to a good integrated. If you have suggestions outside of tubes, I'd like to hear them too. FYI, the B&Ws are rated at 90dB sensitivity. Thanks! Bob