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Lorenz

Lorenz PCC88 = 7DJ8(6DJ8 equiv.) Matched Pair Black Logo - Germany 1950s - NOS

Lorenz PCC88 = 7DJ8(6DJ8 equiv.) Matched Pair Black Logo - Germany 1950s - NOS

Regular price $359.00 USD
Regular price Sale price $359.00 USD
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Product Summary

These must be the most exotic European audio tubes! So elusive they're even unheard of in many parts of the world. Not many of these tubes are around, either, let alone a strong matched pair! Although lesser known than big names like Telefunken and Siemens, they are just as remarkable as any other German-made tubes and have been the go-to tubes for guitar amplifier users. 

Sound Qualities

Like most German tubes, they are characterized by an impressive open "air" at the top end, and the soundstage is large, even in mono applications such as my classical vinyl records from the early '50s, these tubes  provides you with a full 3-D imaging. The midrange is ruler flat,  a.k.a. natural sound, and the bass is tight and accurate. One very unique feature of Lorenz tubes is the fine sense of dynamics you get from anything you play - it feels you are enveloped by an invisible "musical body" that you can't escape from and it's cerebrally joyful. Last but certainly not the least, as the legend goes for all the German tubes, these are astonishingly quiet. If you're seeking European ECC82/12AU7 tubes with ultra low noise look no further. These will get the job done fantastically.

Professional Tube Testing

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

Tube 1: 

Measured transconductance (GM): 13.46/13.66 mA/V  - 108%/109%  (100% = 12.50 mA/V)
Measured plate current (IA): 15.037/15.457 mA  - 100%/103%  (100% = 15 mA)

Tube 2:

Measured transconductance (GM): 14.3/11.9 mA/V  - 114%/95%  (100% = 12.50 mA/V)
Measured plate current (IA): 21.96/17.707 mA  - 146%/118%  (100% = 15 mA)

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

Curve trace is also included in the original RoeTest report.

Appearance & Cosmetic condition

Besides its wonderful sound characteristics, we treasure this pair also because its great cosmetic condition as well. The paint is still intact, including the Lorenz logo and PCC88 lettering. 


Packaging


New white tube boxes.

 

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