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Philips

Philips E88CC = 6922 Matched Pair - Holland 1962 - Valvo Label - Near NOS

Philips E88CC = 6922 Matched Pair - Holland 1962 - Valvo Label - Near NOS

Regular price $208.50 USD
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Product Summary

The "textbook Heerlen sound" has been referenced in several Soundlumia listings of Amperex Holland E88CC/6922 tubes, and many tube enthusiasts asked what that all means. So this is the answer: the late 1950s and early 1960s tone, the timeless Philips radio tone that many of us grew up listening to, the beginning of over a decade's excellence in sound, the classic tonal template for all the great (and greater) Amperex Holland/Philips E88CC tubes, including this gorgeous Valvo-labeled pair. Valvo was the Philips Germany division.

Sound Qualities

Made in Heerlen, Holland in 1962, these tubes naturally share all the remarkable characteristics of the "textbook" Philips Holland house sound. The midrange presentation is transparent, natural and expansive, with a slight touch of warmth that illuminates your music. Bass is deep and well controlled and the accuracy feels very similar to the high end German E88CC's. Sound separation and clarity on these are nearly on par with the Amperex PQ (Premium Quality) tubes - you should hear absolutely nothing but the pure soul of your music and all of it when you use these tubes. 

Appearance & cosmetic condition

This pair also stands out aesthetically among the vintage tubes. One of the tubes still has nearly 100% of the silkscreen and looks brand new and the other tube also has decent amount of paint & lettering remaining on the glass Heerlen date codes etched on glass are intact and visible on both tubes:

7LG ⊿2G1 (7LG = E88CC,  = Heerlen, Holland2 = 1962, G = July, 1 = Week 1 of production month)

Professional Tube Testing

This set was tested and certified by RoeTest V11 tester with the following result: 

Tube 1: 

Measured transconductance (GM): 13.16/12.30 mA/V  - 105%/98%  (100% = 12.50 mA/V)
Measured plate current (IA): 16.431/15.179 mA  - 110%/101%  (100% = 15 mA)

Tube 2:

Measured transconductance (GM): 11.34/12.29 mA/V  - 91%/98%  (100% = 12.50 mA/V)
Measured plate current (IA): 12.584/14.676 mA  - 84%/98%  (100% = 15 mA)

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

Curve trace is also included in the original RoeTest report.
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