2A3 - 6A3 - 6B4 - 300B

2A3 - 6A3 - 6B4 - 300B

Shop our selection of 2A3, 6A3, 6B4 and 300B vacuum tubes. These tubes are all somewhat related to each-other but are by no means interchangeable. They are all part of what is considered to be the top of the SET tubes.