Avalon St-4 Vacuum Tube Set (4) For Vt-737Sp …

Avalon St-4 Vacuum Tube Set (4) For Vt-737Sp  ...Avalon – Avalon St-4 Vacuum Tube Set (4) For Vt-737Sp & Vt-747Sp Tested And Matched 6922
Spare tube kit for Vt-737SP and Vt-747SP. Includes four matched military 6922 tubes.
Avalon, Channel Strips ST-4