Lot (3 pcs) 6N8S ( 6SN7 = 1578) MELZ Metal Base , Hole Black Plates tubes.
Tubes tested in layout of the tube amplifier.
Ua = 255 V
Rk = 1000 ohm
1) Ug = 8,9 - 8,2 Volts (X-54)
2) Ug = 8,3 - 8,6 Volts (unknown year)
3) Ug = 7,7 - 7,5 Volts (I-55)
This test complies with the new tubes.
Tubes not tested for noise and leaks.
Due to age sold AS-IS.
$100 for 3 pcs. + shipping cost.
Payment by PayPal. Woldwide shipping.
Can sale separately 1 or 2 tubes.
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Tubes tested in layout of the tube amplifier.
Ua = 255 V
Rk = 1000 ohm
1) Ug = 8,9 - 8,2 Volts (X-54)
2) Ug = 8,3 - 8,6 Volts (unknown year)
3) Ug = 7,7 - 7,5 Volts (I-55)
This test complies with the new tubes.
Tubes not tested for noise and leaks.
Due to age sold AS-IS.
$100 for 3 pcs. + shipping cost.
Payment by PayPal. Woldwide shipping.
Can sale separately 1 or 2 tubes.
