DAC-Preamp having these specifications?

@celander 
Ok, i was thinking used prices, with range for a used but Exc condition unit from $2400-$3500, which I have seen IME. Many sellers appear to settle around $2500 as a final price, which would fit the budget. 
But you only want new?

celander OP
  DAC-Preamp having these specifications?

Look for one that's direct coupled on it's output buffer, and I would go <100ohms output impedance. And also has these features for the best quality.
Go for one that has settable max analogue gain output, so you can use it’s digital volume control in the top 25% part of it’s range.
This way your sure of not "Bit Stripping". Just like Wadia and Mark Levinson do on their Flagship models.
Today I know M1 Bricasti has it, there must be others as well, these are the ones I would go with as they know about "bit stripping" that's why it’s introduced. As the Wadia attached shows.

https://ibb.co/d69hD9

Cheers George

There's a store demo Bel Canto DAC 3.5VB for sale on eBay for $1799 (missing remote).  This unit was $5k new.  This is a great opportunity.  BTW, if you are considering a BC DAC you HAVE to get one with the virtual battery supply (VBS).  I got to hear them back to back in my system, and the VBS takes the DAC to a much higher level.  Best of luck. 

celander
@georgehifi My ATC active monitors have a 10-kOhm input impedance, so I need something having an output impedance lower than 1-kOhm.

Yes generally as 1:10 rule I use it, "if" your interconnects are low capacitance and around 1mt long, source to amp.

But your going from dac to speakers with these interconnects, probably around 4mts, so I would err on the side of caution and have the dac’s output impedance 100 or 200ohms.

Cheers George