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Old 14th Jan 2005, 2:07 pm   #17
XTC
Retired Dormant Member
 
Join Date: Oct 2004
Location: Bristol, UK.
Posts: 837
Default Re: ODD VALVE,type 'e80f'

Quote:
Originally Posted by greg_simons
hi folks again
the e80f valve works just fine in the maplin special but i'm unable to detect
much audible difference!!, still sounds great.
greg.
Special quality valves were variants of normal valves made with extra care and superior materials.
They were designed to withstand high levels of vibration or have extended life under low cathode current conditions. E.g. the Brimar 'Trustworthy' range. The Brimar data book has a couple of pages describing the difference.

They can't be expected to deliver a stunningly better performance than a non-SQ equivalent in ordinary use.

As for the E80F being in demand by valve hi-fi purists - maybe, but don't they tend to go in for particular brands, and constructional variants which are suppose to do wonders? Mullard with Yellow lettering, 'long-plate' ECC83s and such.

Pete.
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