I have many and probably most of the early Telarc vinyl releases, and indeed many of them are outstanding.
Much of the credit for their sonic quality can be attributed to the "purist" microphone techniques they used. Rather than placing a forest of microphones in close proximity to the performers, as many of the major labels did, they used just two or three or so high quality omni mics placed at significantly greater distances. In addition to the inherent sonic advantage that approach can provide regardless of the recording technology that is used, it reduced the amount of high frequency energy being picked up that might otherwise have brought out to a greater degree some of the shortcomings of digital recording technology, especially in its early implementations, such as the effects of sharp-rolloff anti-aliasing filters.
I should add, though, that in a few of their releases that relatively distant mic placement resulted in what I found to be disappointingly "swimmy" acoustics.
A few other classical labels that come to mind as having in those days put out some very good digitally recorded classical releases on vinyl, if memory serves, were Hyperion, Chandos, Nimbus, and Deutsche Harmonia Mundi.
Oh, and if your system can't handle brief dynamic peaks that may reach 100 db or more at the listening position, without amplifier clipping or other issues, beware of that Telarc bass drum!
Regards,
-- Al