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1x Mullard B329 (ECC82+) 17mm Long Plates - Marconiphone Label - Mitcham 1959

1x Mullard B329 (ECC82+) 17mm Long Plates - Marconiphone Label - Mitcham 1959

Regular price $265.90 USD
Regular price Sale price $265.90 USD
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Soundlumia's Opinion

No other tubes can deliver vocals like the British-made Mullard's, and that's a fact. These enhanced ECC82 tubes (B329) with the 17mm long plates carry the unmistakable vintage sound signature of the very early production. They are extremely hard to find today and shouldn't be overlooked by critical listeners and tube enthusiasts. 

The overall tonality of Mullard ECC82 tubes is warm and lively with a very spacious sound stage. "Like a warm British jacket of the finest tweed, these glorious tubes have an attractive sweet warmth in their midrange and lower regions."  This is how the experts on describe the sound signature of British-made Mullard tubes. The top end is silky and pleasant and doesn't get rolled off. They retain a fine sense of "air" at the top, and the upper midrange is smooth and liquid. These tubes reproduce the human voice, especially female voices, with haunting realism. The British made Mullard tubes are also known to have an attractive sparkle at the top with rich we know where that "warm British jacket" comes from!

Professional Tube Testing

This set was tested and certified by RoeTest V11 Professional Tube Testing System with the following result: 

Tube 1:

Measured transconductance(GM): 1.56/1.11 mA/V  - 71%/50% (100% = 2.20 mA/V)
Measured plate current(IA): 9.115/8.522 mA  - 87%/81% (100% = 10.5 mA)

NO shorts, leakage or gas. NO noise or microphonics.

Curve trace is also included in the original RoeTest report.

Appearance & cosmetic condition

This tube is in pristine cosmetic condition with nearly 100% of the paint and lettering well retained. The Blackburn date code etched on glass is also perfectly: 

R9F (R = Mitcham, GB, 9 = 1959, F = June)


NEW white tube box.

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