4 Pieces 7581A Tubes Philips ECG Tested Strong =6L6 KT66 for your McIntosh MC240

Pricing & History
  • Sold for
    Start Free Trial or Sign In to see what it's worth.
  • Sold Date
  • Source eBay
For sale is a set of four (4) pieces 7581A power tubes by Philips ECG. There have he same code, something like 8539 AAB. Don't know what's that for. One shows clear top but it has the identical structure and code with others. 7581A are equivalent to KT66 (not sure) and better than 6L6. All tested strong (close to the max reading) on my friend's small tester except one is marginal. One of them has alignment pin missing (still can see the stud for alignment). I will pack it very well for shipping. No reserve.