Excellent classic pentode, Ken-Rad is the most common 307A type. Great KENRAD tube for SE amplifiers! I personally used it in few amps, here is small 307A VT-225 baby amp, it is also used in RH307A amp by Alex Kitic and Pete Milett’s 307A Push Pull Amp (great article about VT-225 307A)!!!.

Mostly dark coated, but some are clear glass.
In JAN boxes, longer life than National Union.

Before selection … All tubes are carefully tested on Neuberger RP370 for plate current and on Dynamic Mutual Conductance Tube Tester I-177-B for conductance.

Click to see All 307A VT-225 306A in stock


This Post Has 4 Comments

  1. Tony Bombera


    How much are your 307a tubes?



  2. Nicola Giannoni

    Vorrei sapere il prezzo di una coppia selezionata di 307A/VT225 Ken Rad, spedizione per l’Italia


  3. Francesco De Propris

    Please, can you tell me the price a pair tubes 307A/VT225 Ken Rad tested and selected, included shipping cost to Italy?

  4. Marcello Bassano

    Hi, would like to know the price of 2 matched pieces, of 307A, delivered to Germany. Thanks!

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