Preamp suggestions again with size considerations

So my previous couple of posts asking for equipemt recommendations turned out exceptionally well. I picked up a Linear Tube Audio Microzotle MZ2 which I really enjoy. And I really like the smaller form factor of the MZ2 and the flexibility of the external linear power supply as well. Makes good use of some limited space in my entertainment center.

So I'm back again looking for a recommendations for another preamp along the lines of the MZ2 in size. And if an external linear power is an option , all the better. This will allow me greater flexibility with my gear and allow me to move the MZ2 out as a stand alone integrated for a second system should I desire.

So I need another tube preamp to drive my First Watt Aleph J amp and a pair of Klipsch RP-600M bookshelf speakers. The Aleph J pushes 25 watts, with a gain of 19.6dB and input impedence of 242 kohms so ideally I need an preamp with gain. Other details are:
No phono needed
At least 2 inputs
Remote volume control
Under $2500 new or used
Unbalanced RCA in/outputs
Smaller form factor than a full size component

That about sums it up. I look forward to and thank you for all your replies and input.