I use an Esoteric P-10 ( from 1993 ) with a Stellavox ST-2 ( 2005 ). Have also had a TEAC VRDS T1 ( 1997 ) with Apogee Mini-DAC ( 2007 ). I used a 1.5-meter digital interconnect for minimum cable-reflection-induced jitter.
I have found these higher-quality older transports to work very well with more modern converters. Neither of my setups posed the sort of problem you seem to be anticipating.
The one caveat might be the age of the laser, which will certainly need replacement and perhaps sooner than later. The VRDS units use Sony laser heads and these seem still to be available, but IME not all technicians are equally good at installing them. In my case the local TEAC authorized service did a poor but expensive job, and the new laser needed another replacement after less than a year. The second time round I was lucky to find a very competent gentleman.
I have found these higher-quality older transports to work very well with more modern converters. Neither of my setups posed the sort of problem you seem to be anticipating.
The one caveat might be the age of the laser, which will certainly need replacement and perhaps sooner than later. The VRDS units use Sony laser heads and these seem still to be available, but IME not all technicians are equally good at installing them. In my case the local TEAC authorized service did a poor but expensive job, and the new laser needed another replacement after less than a year. The second time round I was lucky to find a very competent gentleman.