AudioNervosa
Systemic Development => Amplification and Preamplification => Tubes => Topic started by: rollo on January 10, 2011, 08:41:44 AM
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Just got in a pair of CBS labled 5687s made by Tungsol for CBS. Blackplates with copper rods. Either I received a extremely low noise tube or this particular tube is something special. Anyone else have experience with this tube ?
How about other 5687s you may have tried ? :)
charles