Description
This is a pair ECC801S produced by Telefunken in 1960 in Ulm Germany. The tubes have a triple micas, typical plate structure (see pictures), a damping arm and copper grid posts, see pictures. Very healthy tubes with excellent specs! Tubes with matching triode systems; see test results. This is a super low noise tube! The early sixties tubes are the best sounding, best made and most valuable of all the Telefunken ECC801S audio tubes.
Note that one of the tubes has some carton residues. This is because the orinigal boxes have been wet and therefore deteriorated.
Sonics
Considered by audiophiles the HOLY-GRAIL of all 12AT7/EcCC81 tubes! The richness of the music reproduced surpass any other previous attempt of any other ECC81 tube ever made. “
As if the members of the band are right in the room with you! The dense textural details and markings for dynamics are performed precisely as recorded and reproduced so that all the interweaving parts emerge clearly. The depth of musical emotion is distinctly audible with every detail of the pure orchestral fabric as I’m not hearing my preamp, amp, or speakers anymore, just pure music, the conduit to a higher musical realm, as if there is no hardware at all!”
Test results*
| Valve 1
V147 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
9,8/ 9,3 mA
5,5/ 5,7 mA/V OK |
= NOS
= NOS |
| Valve 2
V148 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
9,6/ 9,5 mA
5,6/ 5,8 mA/V OK |
= NOS
= NOS
|
* For test methods and factory specification read the tube testing page.
Short description
| Tube type | ECC801S |
| Quantity of Tubes | One pair |
| Brand | Telefunken |
| Manufactured in | Ulm, Germany |
| Dates | 1960 / 1960 (U4200806I) |
| Construction | Ribbed short plates diamond bottom |
| Getter Construction | Halo getter with damping arm |
| Print Condition | Both excellent; see pictures |
| Box included | Replicate Telefunken box |
| Equivalent tubes: | 12AT7, ECC801S, 12AT7A, E81CC |
| General test results | NOS |
