408STANDARD_TUBE_SET 113STANDARD_TUBE_SET GROUPING_PAIR_EH-7868 BSCT-ECC81-MULLARD 407STANDARD_TUBE_SET 105STANDARD_TUBE_SET NOS-C3M NOS-GZ37 GROUPING_QUAD_EH-EL34 317STANDARD_TUBE_SET NOS-5814A-SYL-3MICA NOS-6CA4-TELE 1STANDARD_TUBE_SET 305STANDARD_TUBE_SET NOS-V201A NOS-EL84-ADAPTED 2STANDARD_TUBE_SET 477STANDARD_TUBE_SET GROUPING_PAIR_TK-EL84 NOS-6L6GC-SYL