Description
The Telefunken ECC803S is the best ECC83 ever made!
There are still 3 pairs available! Please tell me which pair you want if you order!
A pair of Telefunken ECC803S tubes made in Ulm Germany. never used, in their original box; please see pictures and test data!
The properties of this tube are legendary and widely known. I refer to the many threads on the web for more information.
The printed code U9201301n on the glass of all 6 tubes indicates that the tubes are manufactured in the same month in the Ulm plant in Germany. The tubes have the typical plate structure of the Telefunken ECC803S tubes (frame grid) and of course the diamond bottom.
All tubes are thoroughly tested. They have excellent electrical values (note test results below) and may be considered equal within the limits of measurement accuracy! The test values match the factory specification very precisely and both internal systems are balanced.
Each tube is a real jewel, so please excuse the firm price.They fully justify the high costs. Telefunken produced a very limited number of these beauties.
The ECC803S will bring the real instruments and orchestra to your room!
Sonics
Excellent preamp valve, low noise, very smooth extended highs, very good in phono stages.
ECC803S: balanced and smooth sounding with liquid midrange, and extremely natural; recommended!
Test method & results
Tested with official Telefunken test set-up.
Test methods are outline on the Tube testing page, for test conditions see Category Page.
Pair !
| Valve 1 sold !
V315 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,4 / 1,3 mA
1,7 / 1,6mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2 sold!
V316 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,4 / 1,3 mA
1,7 / 1,6 mA/V OK |
= NOS / NOS
= NOS / NOS
|
Pair 2
| Valve 1
V323 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,4 / 1,3 mA
1,7 / 1,6mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2
V324 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,4 / 1,4 mA
1,7 / 1,7 mA/V OK |
= NOS / NOS
= NOS / NOS
|
Pair 3
| Valve 1
V325 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,4 / 1,4 mA
1,7 / 1,7mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2
V326 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,3 / 1,3 mA
1,6 / 1,6 mA/V OK |
= NOS / NOS
= NOS / NOS
|
The measurement data show that both systems of all tubes are matched nicely (< 5%). The test results fulfill the factory specs of a new tube.
(Telefunken factory specification see picture)
Summarized description
| Tube type | ECC803S diamond bottom |
| Quantity of Tubes | One pair |
| Brand | Telefunken |
| Manufactured in | Ulm, Germany |
| Date code | U9201301n |
| Plate Construction | “Spangitter” |
| Getter Construction | Halo getter |
| Print Condition | Excellent; see pictures |
| Box included | Original Telefunken box |
| Equivalent tubes: | E83CC, ECC83, 12AX7, CV4004 |
| General test results | NEW |
Please read our test and shipping policy before buying !
