Are "vintage" DAC's worthwhile, or is this a tech that does not age well


Hello,
whether it’s worth looking into old dac such as
Spectral SDR 2000,
Mark Levinson No.35 (36)
or so Sonic Frontiers Sfd-2 Mk2 DAC.

Digital audio is the fasted moving, now improving category out there
Because to this day they have no usb connection or other options.
But is it necessary?
Or is it better to still focus on a truly time-tested sound?

(sorry for my English)
128x128miglos
Any one who thinks all DACs sound alike has tin ears. Sorry guys and gals but that's the truth.
@jond
I have no idea.  I am only able to guess at changes and the date.  The big feature that is different pre/post this period (and 2010 is a guess due to lack of enough samples) is the sudden improvement in Redbook playback, and the vanishing gap between Redbook and high resolution files after this.
DAC's before 2010 were almost universally worse sounding with Redbook than with high resolution files.


i don't agree with this - it is contrary to my own findings
I still use my Weiss DAC202 which I have since 2011 and I am not changing it any time soon. The DAC chip(s) influences the sound of the DAC but there are other factors that are just as important, like the quality of the clock and jitter control cct, the power supplies, the analogue stages, the overall quality of the design, the components used and much more. I agree with most, DACs do sound different but the whole system should be resolving enough to let you hear the difference.