Today I received the NOS Sylvania 6AK5/5654 made in October of 1953. Straight out of the box I can say that the individual improvements are minor and many of us would have a hard time describing the differences. However the sum of the parts does make for an audible difference. IMO the overall presentation is clearer and more detailed while retaining the smoothness I liked so much. No, it has not turned into a hyper detailed unit. I will wait and report in 24 hours.
post #106 of 1326
7/25/09 at 7:12pm