Manufacturer and factory: Telefunken Ulm
Code: U0311000 U5104100E
Year of production: 1961-64
Structure's features: <>Frame Grid
Conditions: NIB new in box
Rating : 1
Original package : yes
This tube 83 is the best ever made and well known, but there is really a difference between 83 of the same brand that justifies the cost stratospheric (for a signal tube)??
YES, No Doubt. What can appreciate the 803S, subject to the best features common to 83: dynamic, beautiful HD and the solid bass range is the extraordinary richness of harmonics.
The 803S and able to bring the piano, violin or any other rich harmonic instrument in your room and take out all the nuances of which it is capable.
The internal mechanical construction is so precise and miniaturized that do not yet understand how can do with the equipment available at that time and ii is the real secret of this tube.
Now unobtainable,and unfortunately the cost was increased , in the last decade in proportion to the valve rarity.This tube has been guaranteed for a period of over 20,000 hours, but i noticed that one pair have been recovered in full efficiency from one electrical medical equipment, which the counter mark Over 100,000 hours .......
PRICE FOR PAIR
PERFECT MATCHING (less than 1%) !!!
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