FS NOS Amperex 3-400Zs
 

FS A PAIR OF NOS AMPEREX 3-400Z(8163)AMPLIFIER TUBES, these are new, unused
tubes in original packing and boxes. A number of older amps can't use
3-500Zs because they are too tall, these tubes are getting hard to find,
$230 plus shipping. Thanks, Charlie Hugg, K5MBX