Philips
6463 Platinum Matched Pair Philips Heerlen Holland NOS NIB RARE WELDED PLATES SQ
6463 Platinum Matched Pair Philips Heerlen Holland NOS NIB RARE WELDED PLATES SQ
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€799,50
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Two tubes (2 pcs) , platinum matched pair within 5% of rare 6463 Philips, made in famous Heerlen tube plant in Holland.
This is SQ Long Life, 10000 hours + version, which practically last forever in any well designed preamp.
Extremely rare early version!!! Welded plates, grid cooling wings, two holes in plates. They are the same codes, etched at each bulb during sealing process. The codes are clearly visible on photos. Real gems, low noise and nicely selected and matched from big batch.
They come in original boxes! Platinum matched pair from few dozen 6463 I have in stock!
They are made in Philips Heerlen tube plant DELTA logo is clearly visible on photos. They are exactly the same codes Cd1 DELTA9L , as it is visible on photos.
Tested on calibrated Tesla BM215M tester for plate current and tested for hum and noise and microphonics in preamplifier.
