6SL7/6188/6SU7 NOS USA Preamp Tube
We have sold many of the JAN (Joint Army Navy) Philips 6188 (6sL7) tubes over the years with great scuces in Ampegs like the B15N. we now have a very few of these New Old Stock USA JAN Tungsol 6188/6SU7 tubes. We found these to also be a great tube for the 6SL7 in vintage Ampegs.
What is the difference between a 6SU7 and 6SL7? Technically not much. HiFi and Audiophile guys have been using these for years and most believe that the 6SU7 is just a hand selected 6SL7.
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