Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Violation!

The CD-R-recordings sold by ArchivMusic, and that you may also be offered elsewhere, are acoustically very inferior to the original CDs.The sound is dull, lacking the for Mercury Living Presence normally clearly articulated, crispy sound. Whereas Mercury Living Presence recordings as you may hear then on normal CDs normally are distinguised by a very high technical quality, the CD-R-products are inferior in sound quality.If you can not at all hear any difference, just take a look at the sleeves and the inlets, and you will probably see what is reflected acoustically: You see pale, unclear pictures and letters.So: The CD-Rs represent violations of the concept articulatede by Mercury Living Presence consisting of recordings where the technical quality has high priority.