Details
New old stock 9 pin magnoval beam power amplifier with top cap. Various brands. Both PL509 and PL519 are European designations for the US type 40KG6A. The PL519 has slightly higher screen ratings, but they are normally interchangeable. Note that European-made tubes are taller, with a seated height of about 4.5". US-made tubes have a seated height of between 3.8" and 4.0".