Preamp with Dual Zone and Remote Independent Volume Control?

Hello y'all,
I am running simultaneously two pairs of very different full range large speakers (Magneplanar and vintage JBL) from the same source using the dual zone feature of my Denon receiver as a preamp.  I use two separate stereo power amplifiers, a NAD and a Yamaha, one for each set of speakers.  The Yamaha is driven from the Denon’s pre-out jacks and the NAD is driven from the Denon’s zone 2 outputs.
The Denon’s dual zone feature allows independent volume control of both sets of speakers from the same remote.  All this works and sounds actually much better than it sounds.... ;-)

I am looking to replace the Denon (which is used only as a preamp) by a proper preamp with similar dual zone control capability which again would allow to balance the two sets of speakers "on the fly" from a remote.
Is there a high quality (but not exotic) preamp, current or past model, which would do the trick?

Thanks!

Yoram