Description
Siemens & Halske 5751WA > as rare as a flying hippo !
Famous triple micas version ! Ultra low noise level!
This pair of Siemens & Halske 5751WA tubes, made in the Siemens & Halske plant in Munich Germany. They are triple-mica version with double posts halo getter; one of the finest E82CC. The 5751WA is a low noise version of the E83CC; equivalent to the ECC803S. The tubes have triple mica reinforcement plates and a round halo getter double post. The tubes have excellent test values that match the factory specifications very well and balanced systems.
Sound Characteristics
This is the classic beauty in sound, admired by many audiophiles. The Siemens tone is considered the “reference sound” for serious classical listeners. Very transparent and open with impressive speed and phenomenal high end extension, accurate bass as intended by the original recording, not at all over emphasized like some other premium tubes. Although just as quiet and analytical as the best Telefunken ECC803S tubes, the Siemens 5751WA’s produce a warmer and smoother sound. These are extremely low-noise tubes.
The sound of this Siemens & Halske 5751WA has slightly more authority than the regular E83CC version!
Test method & results
The tubes have been tested carefully with the official Telefunken test set-up and our sophisticated test equipment. Please read our testmethod for the ECC83 tube family. The measurement data below show that both tubes are matched and balanced. And fulfill the factory specs of a new/NOS (E83CC) tube.
| Valve 1
V336 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,7 / 1,6 mA
1,7 / 1,6 mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2
V338 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
1,7 / 1,7 mA
1,6 / 1,6 mA/V OK |
= NOS / NOS
= NOS / NOS
|
(Telefunken factory specification see test page)
Summarized description
Tube code: 5751WA
Actual Brand*: Siemens & Halske
Printed Brand: Siemens & Halske
Manufactured in: Munich, Germany
Visible Codes: 92 – 274
Production date: 1974 (not sure)
Plate Construction: Triple micas reinforced grey plates
Getter Construction: Round halo getter on double post
Print Condition: Nice; see pictures
Box included: Original Siemens & Halske boxes
Equivalent tubes: E83CC, ECC802S, 12Au7, ECC82, 5814A, 12AU7WA
General test results: NOS specs
Quantity of Tubes: 2; one pair
