@daveyf - just because technology moves on in a newer model doesn’t mean what came before is obsolete- the older tech still beats most lower priced DACs. Also, the older tech used items still sell at a steep price, but obviously not to the level of new.
If one is afraid of newer tech replacing old, they’ll never be satisfied in high-tech products like computers, digital audio…. We only have 1 choice - buy or not, accompanying with “fear of obsolescence” is an unwise pointless option