OSRAM 4 x KT66 tubes Matched Smoke glass The BEST KT88 300B 6L6 EL34 2A3 U52

For your consideration I have a superb quad set of Osram KT66 valves made in England that test high on my recently calibrated Hikock 539C tester - my Audiophile friends love Osram smoke glass valves - superb for your vintage Quad or Leak mono blocks or stereo amplifiers - if you want your amp to sing then these are must :. My photo's show good detail - good luck. Hikock good average = 3150. Please note : All electrical goods must be inspected/checked by a licenced electrical technician before any voltage is applied.