Shootout of Nos 6sn7 tubes
https://www.ebay.com/itm/Matched-pair-Extremely-rare-1578-6N8S-audiophile-6H8S-6SN7-Metal-base/273874731266?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
I am the one who started buying this stock. But it seems that this dealer is responsive to buyer's request. |
After receiving two more pairs of 6n8s metal base tube made in 1952 today, now I have 5 pairs of 6n8s metal base tubes in addition to 3 pairs of 1578 tubes made in 1980 and 83. 6n8s metal base sounds more female like with nuanced details while 1578 sounds more robust with deeper bass. I will take turns at tubes depending on my mood. |
Another bad Melz 1578. I ordered 3 pairs and like the first set, one tube is crackling after 50 hours of burnin. It's also microphonic; in between crackles I can hear the tube echo thru the speakers when I tap on my amp. These are all from 1980 and the same dealer (who does accept returns), but I'm done gambling with this batch of tubes. Damn, they sound so good. I received my 6N8S 1950 pair from Ukraine, but will wait to try them until I've run-in my 1578's. |
I heard that all old Russian tubes are prone to noise and the only way out is to do re soldering. I recommend you to contact person with ID of " Paladin79 "in Headfi to learn how to do it. https://www.head-fi.org/threads/the-reference-6sn7-thread.117677/page-141#post-15715112 |
