It probably is dependent on what parameters you are comparing with more recent equipment. If it is simply raw details... then there may not be a huge difference. If it is about how natural and musical and fleshed out the sound is... there is likely to be a huge difference in modern DACs.
Am I alone in the world using a 1997 high end pro sampler as a DAC?
Samplers are essentially a ADC/DAC on steroids.
I have blind tested it against some 2025 DAC units over £1500 retail, and this beast came out on top.