I also have a very nice palomar 300A with power supply it needs 2 tubes..has 6lf6's and 2 were shorted so i threw them away ..Still see 300 watts even with 2 of them gone..Needs ssb/am switch replaced ..Other than that it's all good..great pre amp no relay issues..Power supply has new caps and diodes installed..Taking offer's..will upload photo's soon very nice looking amp