The x upgrade warms up the cdsa a lot and adds resolution and is worth every penny to mine.
But the xds1 removes even the last traces of digital chill and really improves performance on poorly mastered CDs and adds another level of analog-style relaxation. If you have the $$, the xds1 stops upgrade-itis permanently (for me it did).
But the xds1 removes even the last traces of digital chill and really improves performance on poorly mastered CDs and adds another level of analog-style relaxation. If you have the $$, the xds1 stops upgrade-itis permanently (for me it did).