La Radiotechnique

1x La Radiotechnique ECC82 12AU7 Long Plates - Suresnes 1959 K64 - Philips Label

$187.50 USD

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Soundlumia's Opinion

Call it "the romantic version of Philips radio sound" or "a great alternative to the Dutch house tone", this is something you don't want to miss from your vintage tube collection. Indeed, you get extra warmth and intimacy from La Radiotechnique (Philips France) tubes in addition to the legendary Heerlen sound, known for its transparent, natural and expansive midrange presentation. The sound stage is spacious, deep and structured like on any Philips tubes. Bass gets deeper than Heerlen but very well controlled and feels as accurate as on their high end German counterparts (Siemens, Telefunken, Valvo etc.)

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): 1.95/1.91 mA/V - 89%/87% (100% = 2.2 mA/V)

Measured plate current(IA): 9.79/10.697 mA - 93%/102% (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

Silkscreen: 100%

Date code(s): K64 F9F1 (K64 = ECC82 Long Plates production gen #4, F= Suresnes, FR, 9 = 1959, F = June, 1 = Week 1 of the production month)