Originally Posted by jantze
Have you tried out Mullard GZ34 (60's)? Is Amperex bugle boy GZ34 even better?
yes, i have a mullard made gz34 from the 60's and it's a fine tube...the gz34
made from the late 50's/early 60's are the best exhibiting creamy smooth
mids and fine dynamic punch...same applies to the amperex bugle boys. the
earlier versions, f31, seem to exhibit smoother mids than the later 60's/early
70's version, f33...but i'm nit-picking, really...just avoid the chinese and russian
made gz34...the japanese version "international", as well as "mullard" as jamato8
mentioned above, are the exception and equivalent in SQ to the f32
and relatively cheaper at around $20-$40 per tube...
amperex and mullard really sound very similar...but the amperex seems to
exhibit a very slight higher treble extension than the mullard whereas the
mullards are very consistent in the mid region where it excels...this is what
i hear with the wa-6 maxed...
my favorite gz34 version is the brown fat base mullard made in the late 50's
it has the best mids and bass extension along with a refined treble that
out does a round-plate tungsol 6sn7gt...but it's fairly hard to find nowadays.
the black fat base is nothing special and sounds similar to the standard
sized base...the metal is the most dynamic and i think that takes away a little
from the beautiful mids that is characteristic of the non-metal base types,
but it makes up for it with exceptional resolution and impact...very expensive