Foton 1961 5881 (6p3s) Tubes
-Test Well & Matched to tight margins (1 - 2.5 Ma)
-Conditioning via Maxi Matcher burn in station briefly
Description
All 1950's models sold quick - 1961 - 1962 remaining
NOS 60's 6P3S (5881) tubes in original boxes. Fabulous sounding Mil Spec produced Tube which are reliable, in 10/10 condition With full paperwork and OTK Mil Spec Stampings. Sold in original Blue tube boxes. A Fantastic tube for the plethora of new smaller Hi Fi systems and Tube Guitar amps such as fender bassman, tweed and brownface style amps and their modern counterparts. Pins are cleaned and lubricate with a special solution.
Tested at real amplification levels, 400 volts
Tone Profile
beautiful vintage warm tone with softer yet dynamic response. I will be expanding this also with some audio demos & graphs



