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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 18th Mar 2017, 11:58 pm   #1
kalee99
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Question Cossor V9

Hi all,
I have to admit I am stumped. can anyone tell me the difference between a cossor V9 and a PX4?
I opened up a box of valves I bought years ago at an auction & found this cossor V9 in a box with handwritten PX4 on the outer cover.
The valve tests 100% on my avo valve tester as a PX4 No data either in the avo book or the Mullard valve data book for the V9?
All very strange
Paul
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Old 19th Mar 2017, 1:21 am   #2
Boater Sam
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Default Re: Cossor V9

About £300 I would think. The audiophools would want it etched "PX4" in gold.
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Old 19th Mar 2017, 1:13 pm   #3
AC/HL
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Default Re: Cossor V9

It quite likely is a PX4, or 4XP as Cossor marked them: http://www.r-type.org/exhib/aag0017.htm
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