TUNG SOL  TYPE 5998 / 421A  TWIN  TRIODE POWER OUTPUT ( TWO

PIECES ONLY / ONE PAIR  ) vacuum tube for use in OTL Audio Amplifier service.

 Tubes have been fully tested in our in-house test lab; each triode section has

been individually tested at high voltage and high plate current for function

at about 250 volts plate at significant plate current and for residual gas

 content ( grid current ) to eliminate problem tubes before sale.

  Tubes are NOS and were obtained directly in Livingston from a factory 

engineer many years ago and have been in our possession for some 40+ years.


NOTE ON FEEDBACK -  SEE TUBE_GAL; 635 + AT 100 %


  Buyer purchase will be properly packed and shipped with declared value to make certain the item arrives in the condition it was shipped - not wrapped in paper in a small box to gain a few dollars profit on shipping charges.

 Shipping time is set at 10 business days although we will try to ship within 5 days.

 Domestic shipping will be via FEDEX ground; shipping cost is an estimate as the buyer location cannot be known in advance.

 We may also use USPS Priority Mail should that be significantly cheaper and adjust the cost before payment.

 Tube guaranty is " by exchange " - if you have a problem we just ship you another tube in exchange ( not likely as this is good material ).

 Payment to be via PAYPAL to our Ebay Paypal account.