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(!!!) (Recommended PAIR) ECC31=CV1285=6N7G branded "NR73/APW 1280" Mullard black plates NOS 1950's (8.6/9.2ma and 9.1/9.8ma)

$ 259.99

1 Pair) ECC31=CV1285=6N7G branded "NR73/APW 1280" Mullard black plates NOS 1950's same internals, inverted "platter shape" getter bracket in ECC31 boxes

1 tube) 9.1/9.8ma Gm=2700/2900
1 tube) 8.6/9.2ma Gm=2600/2800

Vplate=200V, Vgrid=-2V, Good Iplate range 7-9ma

TUBES PLUGGED INTO OCTAL SOCKETS FOR PICTURE

 

ECC31=CV1285 Mullard: (6N7GT substitute)
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The ECC31 uses a common cathode for both triode sections
and is equivalent to a 6N7G. Except for interelectrode capacitances,
and a different pinout, this tube is identical electrically with type ECC32, but CANNOT be substituted for a ECC32 (ECC31 mu = 32, ECC32 mu=32)

ECC31 SONIC FEEDBACK:
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One might think you would praise the Mullard ECC31 to justify the high price you ask.
But that's not true, they sound so extremely good the price IS justified (because you cannot
get this sound cheaper): My just for fun stereo amp is a Philco type 45 driven by Ken-Rad 6N7GT's.
I was very pleased with the sound, so I wanted to know how the praised Mullard ECC31/CV1285
may sound....unbelievable! Lots of realistic space, rhythm, great tonal balance with very
truthful sound of the instruments, natural colours...this tube gives POWER and authority to
the 45 flew power triode! Stunning! Going back to the Ken-Rad's are several steps backwards:
Air is lost, less colours, less strong, narrow, the music doesn't make so much fun anymore
than before, the musicians seem to play funny uninspirated. The ECC31=CV1285 may be a little
underestimated due to the common cathode, but this is a big mistake. Running in parallel is
not "political correct", but it sounds absolutely outstanding!

 

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