1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591
1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591
Use EL34 tube to replace 7591 tube,
Upper tube is EL34 , bottom tube socket on AMP is 7591
Use EL34 tube to replace 7591 tube,
Upper tube is EL34 , bottom tube socket on AMP is 7591
