B309 Marconi Osram M.W.T. Special Quality of ECC81 12AT7 best sound!

Marconi Osram B309 Square getter GBP 300 pair.

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Description

Offering the best election of Marconi Osram B309 with square getter. That is an ECC81 12AT7.

These tubes are the best for audio input signal and you will be very happy.

All Marconi Osram B309 tested and in full working order.

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