439STANDARD_TUBE_SET 406STANDARD_TUBE_SET EH-6H30PIG NOS-5Y3WGTA GROUPING_PAIR_SI-EL34-B NOS-6C4 562STANDARD_TUBE_SET 256STANDARD_TUBE_SET GROUPING_PAIR_TS-6SN7GT 49STANDARD_TUBE_SET JJ-KT66 SI-12AT7 238STANDARD_TUBE_SET 255STANDARD_TUBE_SET GROUPING_PAIR_TS-EL34B GROUPING_PAIR_JJ-EL34II 366STANDARD_TUBE_SET NOS-7199-ADAPTED 248STANDARD_TUBE_SET GROUPING_PAIR_EH-7591A