Recent content by mark-tube

  1. mark-tube

    Introduce myself and vintage vacuum tube collection

    Thank you , what is your preferred one ? What are your rarest type ? Could you share more infos ? You’re right regarding black plates version , hard to find and only from the very first / oldest production , I prefer them, great performances vs the grey plates (later version / production ) Tks
  2. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    ' There is an excellent review about these tubes from Blake I leave you here a screenshot from another thread of Lampizator here in WBF (don’t know how to share the direct link but there are all infos and # of post so you could find it here )
  3. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    Few pictures of PT14 / TS14 Philips with the metal shining base / socket . In this pair there is also a table (sticker on glass) with the possibility to mark the date of instal and the date of removal of the tube from the amplifier. (In service / removed) The technician was easier to mark the...
  4. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    You’re welcome ?? happy to share infos , not many people knows these tubes … hidden gems
  5. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    PT14 data from old books
  6. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

  7. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    An high quality decor , long life
  8. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    The picture has been taken by side and for this you can see “different” but tubes are the same :) with same size , picture below front wiew. The color is only silver and the coated is conductive , the treatment has been made to reduce noise and improve the performance
  9. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    The labels are the taxes payed October 1959 , those are postal tubes made especially for postal amplifiers (telecom serie) long life and not commercial tubes , made to last long , made for continuous working under severe conditions , not commercial tubes. During the 1950’s people couldn’t buy...
  10. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    Yes those tubes are a special serie , not commercial , made for postal office station amplifiers the so called “serie telefonica” (telephone series) they are long life tubes made to last long for continuous working hours (their nickname here is “eternal tubes”:) It’s difficult to find...
  11. mark-tube

    Lampizator Valve / Tube Rolling Review Thread

    PT14 with adapters (for PX4 settings)
  12. mark-tube

    Introduce myself and vintage vacuum tube collection

    1561 (aka RGN2004) Made by Neotron / Visseaux in France , nos with original envelope (not box) black smooth plates dark black , squared getter @ bottom , black base , hanging filament (top springs) very nice tubes full life, strong emission & balanced systems . Good stock in my collection
  13. mark-tube

    Pacific dac: Lampizator's new top of the line dac

    Dears , have you ever considered 5Z3 Fivre into tube rolling ? With a simple adapter you can use it in place of 5U4G / U52 with great performances , close to RGN2004 , take a look
  14. mark-tube

    Introduce myself and vintage vacuum tube collection

    You’re right Steve, probably I started from the opposite side :) collecting first instead using first. I started collecting the tubes that fascinating me first , driven by the rarities, the progress they made to the society (eg. postal tubes for long distance telephony service) at that time ...
  15. mark-tube

    Introduce myself and vintage vacuum tube collection

    Many thanks Steve, I really appreciate your feedback and message. I started about ~ 15 years ago with only vintage vacuum tubes, my collection was primarily focused on early postal tubes 1920’s, then Fivre tubes made in Italy , Marconi Italy , Telefunken Milan (made in Italy too ) Zenith Monza...
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