I'm not sure what a musical instrument has in common with cables or tubes, but you are correct, the whole affair does call into question the efficacy of blind testing.
If you read the summary of the test, the unsighted violin players certainly heard differences and were able to differentiate the sounds of the violins. Their preferences are simply a matter of taste, much as one prefers one tube, or cable, over another. Perhaps it is the new violins that are magic, or the original poster, and not the tubes or cables.
If you read the summary of the test, the unsighted violin players certainly heard differences and were able to differentiate the sounds of the violins. Their preferences are simply a matter of taste, much as one prefers one tube, or cable, over another. Perhaps it is the new violins that are magic, or the original poster, and not the tubes or cables.

