Location: Middlesex, UK
Posts: 4,482
I'm Alex.
The one main thing you have to establish, where either fake valves, or semiconductors are concerned is; are they actualy the same "electricaly" as the device they are pretending to be ?
For example, there were a lot of a well know make of ECC88/E88CC's being sold as the real deal years ago, [when everyone and his dog seemed to be building equipment using them] on physical inspection,they looked to be the real deal, however; after thorough testing, they turned out to be a variable mu version!!!
A...
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
Location: Coventry
Posts: 131
I'm Mick.
Hi what would the effect of "variable mu" be if the ecc88 was installed?
In Audio aplications, the diffrence between fixed, and variable mu triodes is not always obvious, however; one should not be substituted for the other, especialy in radio, or test equipment aplications, as the affect of the diffrence in grid spacing character [which is the main diffrence between each type] can be considerable.
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
Location: Middlesex, UK
Posts: 4,482
I'm Alex.