1958 Sylvania 12AU7 PLATINUM PLUS GRADE Preamp "D" Tube Matched Pair > 100% NOS

Description

Please disregard the item specifics seller notes that says.... "
These classic early to mid 1960's Sylvania tubes have tall gray plates with elevated, round "Halo" shaped getters".
The tubes for sale here are 1958 and 1959 tall, grey plate tubes with bent and angled "
D
" shape getters that are mounted directly on the top mica. (see pics)
All tubes come with a full
30
day, unconditional, no questions asked, money back satisfaction guarantee!
Test scores normally average between
85%
and
95%
of NOS values.
These superb examples measure between
105%
and
115%
of the minimum NOS values!
Individual test scores will be written on the boxes that you receive with your tubes.
These tubes were carefully screened by the manufacturers (Baldwin, Conn, Hammond, Wurlitzer etc.) and specially selected for their
low
noise and microphonic characteristics.
You are purchasing a "
Platinum Plus Grade
" matched pair of tubes. This means that the plates are very tightly matched on a calibrated Hickok TV-7 or Hickok 799 within
1%
.
Please see our other listings for "
Silver, Gold and Platinum
" tubes. Silver Grade tubes are matched within
15%,
Gold Grade tubes within
10%
and Platinum Grade
5%
.
The Gold and Platinum Grade tubes are recommended for more critical applications such as your preamp and phono stage.
The price listed is for one pair of tubes
. To purchase more than one pair, when available, simply change the number in the quantity box which is located just above the advertised price.
Shipping to Canada is .00 for the first pair and .00 for each additional pair.
Please email with any questions and/or concerns.
Thank you for viewing my listings.