Description
Pair: Long Plate ECC83 in the Hamburg plant
This is a pair early long plate, tilted ring getter ECC83 tubes produced in Hamburg Germany. They have a tilted small o-getter. The Hamburg production is highly regarded. Very healthy tubes with matching systems; see test results. The acoustic properties are widely known. I refer to the many threads on the web for more information.
Sonics
Excellent preamp valve, low noise, very smooth extended highs, very good in phono stages. Balanced and smooth sounding with liquid midrange, recommended!
Electrically and Physical Matched Pair
Test results*
| Code | Ia1 (mA) | Ia2 (mA) | Gm (mA/V) | Gm2 (mA/V) | |
| Tube 1 (V102) | mC2 9E | 1,4 | 1,4 | 1,9 | 1,9 |
| Tube 2 (V46) | mC2 8K | 1,3 | 1,3 | 1,5 | 1,6 |
Tested for leakage and gas.
* Where 100% is : Ia = 1,2 mA, Gm= 1,6 mA/V.
Test methods are outline on the Tube testing page, for test conditions see Category Page.
Short description
| Tube type | ECC83 |
| Quantity of Tubes | One pair |
| Brand | Valvo |
| Manufactured in | Hamburg Germany |
| Dates | May 1959 & November 1958 |
| Construction | creases on the top of the bottle |
| Getter Construction | tilted O-getter |
| Print Condition | gone ; see pictures |
| Box included | generic white box |
| Equivalent tubes: | 12AX7 |
| General test results | NOS specs |
