This is the new Golden Dragon ECC83T (trustworthy) is based on the famous Mullard ECC83 which was made in England till the end of the late 1960's. It is a high quality, premium selected valve that is manufactured in China to strict British Trustworthy Specification. It is a different design from the standard generic Chinese ECC83's used by many OEM's. It has medium size plates, it is very musical with girth and body and not the fizz usually associated with Chinese ECC83's.
These are premium tested on specialised digital and analogue testing equipment by Karltone as follows
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Gain (A)
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Transconductance (gm)
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Noise (dbv)
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Microphonics
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Emission Quality
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Grid Leakage
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Shorts
Test results are provided with purchase