急切等待货运公司到来.试试古董大盾.金狮.非利普EL34在M34上比拼.看谁更能和M34和睦相处.
看到这个5692想买.哑黑屏,五钢柱支架,三云母。1965年22周生产.跟50年代的比有啥区别??
再找到168换胆初感里的资料,RCA 5692z红座以50年代早期的最好,但没说60年代的区别(都没提到)。而VT-231 40年代的竟然还排在RCA5692前面,可以参考一下。
6SN7在Tubeworld(国外一个著名的卖管的网站)上的排名
6SN7GT SONIC RANKING
BEST SOUNDING 6SN7 AND EQUIVALENTS (6SN7GT/GTA/GTB/WGT, 5692) ARE THESE:
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ECC33=CV2821 Mullard (can be subbed for a 6SN7GT, max plate volate 300V, superb sound, the best overall, 1950's)
ECC32=CV181 Mullard (can be used in certain applications in place of a 6SN7, max plate voltage 300V, superb sound, 1950's)
6SN7W Sylvania "chrome top" 1940's (metal base and black base)
6SN7GT/GTB/WGT Sylvania "chrome top" 1940's-1950's
CV1988=6SN7GT/GTY Brimar England 1950's and early 1970's (Y=brown base)
VT-231=6SN7GT Raytheon, Sylvania, Tungsol, Ken Rad, RCA 1940's
6SN7WGT Raytheon ribbed plates 1950's - 1960's
5692 RCA Red Base (early 1950's are best)
5692 CBS-Hytron and Sylvania Brown Base (1957-early 1960's)
6SN7GT/GTB/WGT Tungsol 1950's-1960's
6SN7GT Ken Rad
6SN7GTA GE early 1950's (black plate)
6SN7GT RCA early 1950's
6SN7GTB Sylvania late 1950's-1970's
6SN7GTB RCA late 1950's-1960's
6SN7GTB GE side-getter late 1950's-1975
6SN7WGTA Philips USA made by Sylvania 1970's-1980's
6SN7GTB RCA, Sylvania, GE coin-base 1970's-1980's
6SN7GTB Japan 1970's
6SN7 Russian (harsh highs, thin sounding)
6SN7 Chinese (junk, do not use)
还有关于Brimar CV1988的描述。
CV1988=6SN7GTY / 6SN7GT Brimar England 1950's-1970's
(highly recommended, the best sounding 6SN7 for the money; it's strengths
are its super soundstage - very wide open sound, it's a very musical tube, good midrange detail
and high-end extension, bass ok but not thunderous)
请注意这毕竟是一家之言,另外50S-70S的声音应该是有区别的。