Details
New old stock type 24 / 24A 5 pin tetrode with a globe S-14 bulb and top cap. The main difference between the 224 and 224A is that the 224A is quicker heating. Various brands.
New old stock type 24 / 24A 5 pin tetrode with a globe S-14 bulb and top cap. The main difference between the 224 and 224A is that the 224A is quicker heating. Various brands.