For slightly more than your upper budget limit, you could consider the K&K Audio RAKK DAC MKII "Extreme" fed by a used Esoteric P-70 VRDS transport.
The "Extreme" RAKK has a tube/active linestage built into the same case. I own the stand alone version of the linestage and it is very very good in an all balanced system. The Lundahl transformers make for a dead quiet background in my system. The DAC appears to handle up to 24 bit 192 kS/s input. I own a P-70 as well, and its 176.4 kS/s upsampled output is stellar. It has converted me to the superiority of the VRDS mechanism. Kevin of K&K can confirm whether his DAC will accept dual AES/EBU 176.4 input. He will assemble the DAC/linestage combo for a very reasonable cost.
For about $6000 including dual AES/EBU digital cabling you might have a wonderful 2 box source plus active linestage that would be very hard to equal at the price. A pair of replacement linestage tubes is dirt cheap. They are robust Soviet military vintage still available in large numbers.
The "Extreme" RAKK has a tube/active linestage built into the same case. I own the stand alone version of the linestage and it is very very good in an all balanced system. The Lundahl transformers make for a dead quiet background in my system. The DAC appears to handle up to 24 bit 192 kS/s input. I own a P-70 as well, and its 176.4 kS/s upsampled output is stellar. It has converted me to the superiority of the VRDS mechanism. Kevin of K&K can confirm whether his DAC will accept dual AES/EBU 176.4 input. He will assemble the DAC/linestage combo for a very reasonable cost.
For about $6000 including dual AES/EBU digital cabling you might have a wonderful 2 box source plus active linestage that would be very hard to equal at the price. A pair of replacement linestage tubes is dirt cheap. They are robust Soviet military vintage still available in large numbers.