NOS 5881 (6P3S) No Boxes
No Boxes
1967 or 1969 models
Matched within 2-3 % margin
Tested at real amplification levels 400 volts
Description
1960's Foton 6P3S (5881) Tetrode type Tubes. Another Great tube for Hi Fi audiophiles or Musicians. The weight of the tube indicates nice sturdy build quality and additionally exhibits quite good testing values that almost exceed Maxitest standards. Mil Spec produced tube with OTK stampings with the reliability vintage Russian tubes are known for.
Pins cleaned with specialised solutions then tested, matched and briefly conditioned in order to stabilise & reactive cathodes after decades of no use.
OTK, Mil Spec stamped
No burn in options always available
Hi Fi Amps
Works tremendously in smaller Hi Fi systems for people seeking a nice clean, warm response with that unmistakable authentic vintage tone we love. I will be expanding on this soon.
Guitar Amps
Highly Recommended for smaller Fender Tweed, brownface style and other 5881 guitar amps for that unmistakable vintage tone in addition a beautiful clear, warm response. Breaks up nicely when pushed hard. Quite a Reliable tube.



