https://lowtechelec.com/products/cunningham-6c6-vacuum-tube-49741 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7628750399_rb6f_280cffbd-3c4e-410f-aab7-8a9654cc5c3e.jpg?v=1788926718 Cunningham 6C6 Vacuum Tube Cunningham 6C6 Vacuum Tube https://lowtechelec.com/products/matched-pair-rca-6sn7-6sn7gtb-vacuum-27804 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8015554932_snlu.jpg?v=1788926719 Matched Pair RCA 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing Matched Pair RCA 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing https://lowtechelec.com/products/cbs-hytron-5u4-5u4ga-5u4gb-vacuum-tube-14408 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7622670942_d4x2_3c03b2d6-2a8f-4ef5-b2df-fa52653eff92.jpg?v=1788926721 CBS-Hytron 5U4 5U4GA 5U4GB Vacuum Tube Black Plate Rectifier CBS-Hytron 5U4 5U4GA 5U4GB Vacuum Tube Black Plate Rectifier https://lowtechelec.com/products/arcturus-6c6-vacuum-tube-48219 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7628746271_6w1q_8e6b4f5a-8ea8-4cf6-90b9-0adbb2322af6.jpg?v=1788926722 Arcturus 6C6 Vacuum Tube Arcturus 6C6 Vacuum Tube https://lowtechelec.com/products/national-union-nu-6c6-vacuum-tube-61488 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7580808378_fggt_07a6de25-a9df-45fa-b7bf-f5f5709e7806.jpg?v=1788926724 National Union NU 6C6 Vacuum Tube National Union NU 6C6 Vacuum Tube https://lowtechelec.com/products/rca-6x4-vacuum-tube-rectifier-black-65242 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8495217826_cd3k.jpg?v=1788977718 3 Matched Pairs Tung-Sol 5881 Tubes RCA 6X4 Vacuum Tube Rectifier Black Plates NOS NIB https://lowtechelec.com/products/rca-6ad7-6ad7g-vacuum-tube-nos-nib-05951 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.5694485804_rgm1_772426fd-a2f6-4b55-a959-397c34bf3f54.jpg?v=1789013117 RCA 6AD7 6AD7G Vacuum Tube NOS NIB RCA 6AD7 6AD7G Vacuum Tube NOS NIB https://lowtechelec.com/products/telefunken-pcl81-pcl-81-vacuum-tube-valve-04505 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.5877684934_gtq8_44e3529c-b8ba-405d-8fda-6989c22d7441.jpg?v=1789013119 Telefunken PCL81 PCL-81 Vacuum Tube Valve NOS NIB Telefunken PCL81 PCL-81 Vacuum Tube Valve NOS NIB https://lowtechelec.com/products/international-servicemaster-6cg8-6cg8a-04925 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6395996882_ripo_726f092f-283e-4676-a4a0-ca1690e9c466.jpg?v=1789013119 International Servicemaster 6CG8 6CG8A Vacuum Tube Valve NOS NIB International Servicemaster 6CG8 6CG8A Vacuum Tube Valve NOS NIB https://lowtechelec.com/products/matched-pair-general-electric-ge-12sn7-02935 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.5978203729_teff.jpg?v=1789013120 Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes Copper Support Rods NOS-Testing Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes Copper Support Rods NOS-Testing https://lowtechelec.com/products/8-sylvania-25l6-25l6gt-vacuum-tubes-short-20836 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6571097155_3k4g_103d7e69-532e-4a99-b256-5a120e124658.jpg?v=1789013120 8 Sylvania 25L6 25L6GT Vacuum Tubes Short Base Gray And Silver Bottles Lot Of Eight 8 Sylvania 25L6 25L6GT Vacuum Tubes Short Base Gray And Silver Bottles Lot Of Eight https://lowtechelec.com/products/matched-pair-rca-5963-12au7-12au7a-vacuum-99475 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6044750416_k21q_e65f8e21-fa98-484c-a46c-82751f11a553.jpg?v=1789013122 Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade https://lowtechelec.com/products/matched-pair-rca-5963-12au7-12au7a-vacuum-99967 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6092931937_t618_209c2a42-21ac-4d8a-b406-a5e876655e83.jpg?v=1789013123 Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade https://lowtechelec.com/products/pair-raytheon-7189-6bq5-el84-vacuum-16476 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.5999552182_79j2_b10d54e8-e1a6-4e86-827b-0a0099968d45.jpg?v=1789013124 Pair Raytheon 7189 / 6BQ5 / EL84 Vacuum Tubes Pair Raytheon 7189 / 6BQ5 / EL84 Vacuum Tubes https://lowtechelec.com/products/matched-pair-japanese-6267-ef86-mesh-77946 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8008508148_200y.jpg?v=1789099524 Matched Pair Japanese 6267 / EF86 Mesh Plate Vacuum Tubes Matched Pair Japanese 6267 / EF86 Mesh Plate Vacuum Tubes https://lowtechelec.com/products/matched-pair-rca-cunningham-radiotron-04440 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8056367297_1ky8_b5d2f44b-fc69-4c1a-95d0-574ce69bfc3d.jpg?v=1789099520 Matched Pair RCA Cunningham Radiotron Number Type 30 #30 Vacuum Tubes Engraved Base Shoulder ST Shape NOS-Testing Matched Pair RCA Cunningham Radiotron Number Type 30 #30 Vacuum Tubes Engraved Base Shoulder ST Shape NOS-Testing https://lowtechelec.com/products/sylvania-ez81-6ca4-vacuum-tube-valve-63763 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8008549184_7h6v_3037eb8b-6ed2-40c1-ae31-79c62636ef5c.jpg?v=1789099520 Sylvania EZ81 / 6CA4 Vacuum Tube Valve Rectifier Sylvania EZ81 / 6CA4 Vacuum Tube Valve Rectifier https://lowtechelec.com/products/matched-pair-sovtek-6bq5-el84-vacuum-84298 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8067310706_pril.jpg?v=1789099524 Matched Pair Sovtek 6BQ5 EL84 Vacuum Tubes NOS-Testing Matched Pair Sovtek 6BQ5 EL84 Vacuum Tubes NOS-Testing https://lowtechelec.com/products/rca-ez81-6ca4-vacuum-tube-valve-79232 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8056455069_glh3_2a0b664b-1e33-43dd-afb3-fcc21f4ebd7c.jpg?v=1789099521 RCA EZ81 / 6CA4 Vacuum Tube Valve Rectifier RCA EZ81 / 6CA4 Vacuum Tube Valve Rectifier https://lowtechelec.com/products/amperex-12ax7-ecc83-vacuum-tube-valve-85206 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8012086742_tmg4_484aa3a9-2bdb-41ce-9464-d737cf6c8b4f.jpg?v=1789099526 Amperex 12AX7 ECC83 Vacuum Tube Valve Early 1950s Welded Plate Large D Slanted Getter Amperex 12AX7 ECC83 Vacuum Tube Valve Early 1950s Welded Plate Large D Slanted Getter https://lowtechelec.com/products/10-rca-6cs6-vacuum-tubes-nos-nib-lot-of-15738 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7720818839_srnb_7dbde9e9-1a3b-4be5-a758-ba45c44ba427.jpg?v=1789099527 10 RCA 6CS6 Vacuum Tubes NOS NIB Lot Of Ten 10 RCA 6CS6 Vacuum Tubes NOS NIB Lot Of Ten https://lowtechelec.com/products/matched-pair-rca-6f6-jancrc6f6-vt-66-38756 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8020848807_car7_acd1d360-397a-4df7-81ac-52abe51947f5.jpg?v=1789099528 Matched Pair RCA 6F6 JANCRC6F6 VT-66 Vacuum Tubes Milspec NOS-Testing Matched Pair RCA 6F6 JANCRC6F6 VT-66 Vacuum Tubes Milspec NOS-Testing https://lowtechelec.com/products/arcturus-number-type-76-76-vacuum-tube-24464 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7132090422_o2eg_9b702e37-3f5d-41d9-85f8-2f6cdac2c319.jpg?v=1789187118 Arcturus Number / Type 76 #76 Vacuum Tube Arcturus Number / Type 76 #76 Vacuum Tube https://lowtechelec.com/products/zenith-6hf5-vacuum-tube-nos-nib-05763 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7366005814_j6i8.jpg?v=1789187114 Zenith 6HF5 Vacuum Tube NOS NIB Zenith 6HF5 Vacuum Tube NOS NIB https://lowtechelec.com/products/rca-12at7wa-ecc81-vacuum-tube-milspec-08069 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7230836100_iku1_1a2b646c-f362-4a06-86ab-f0251c1f15d2.jpg?v=1789187118 RCA 12AT7WA ECC81 Vacuum Tube Milspec Black Plate NOS-Testing For Your Univalve RCA 12AT7WA ECC81 Vacuum Tube Milspec Black Plate NOS-Testing For Your Univalve https://lowtechelec.com/products/3-us-made-6x4-vacuum-tube-lot-of-three-25426 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6784604502_rudo_b5aa5109-3fe1-43bf-a668-471ec94158fc.jpg?v=1789187121 3 US-Made 6X4 Vacuum Tube Lot Of Three 3 US-Made 6X4 Vacuum Tube Lot Of Three https://lowtechelec.com/products/3-raytheon-12ax4-12ax4gt-12ax4gta-26342 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7516852114_sc35.jpg?v=1789187119 3 Raytheon 12AX4 12AX4GT 12AX4GTA 12AX4GTB Vacuum Tubes NOS NIB Lot Of Three 3 Raytheon 12AX4 12AX4GT 12AX4GTA 12AX4GTB Vacuum Tubes NOS NIB Lot Of Three https://lowtechelec.com/products/3-rca-rca-cunningham-6a7-vacuum-tubes-12476 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7550589216_kqsz_3b757a12-29ba-45ad-9d9c-4114b9c0d727.jpg?v=1789187121 3 RCA / RCA Cunningham 6A7 Vacuum Tubes Shoulder Shape Lot Of Three 3 RCA / RCA Cunningham 6A7 Vacuum Tubes Shoulder Shape Lot Of Three https://lowtechelec.com/products/matched-pair-philips-miniwatt-pcf80-9u8-11772 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6818135195_8i5n.jpg?v=1789187123 Matched Pair Philips Miniwatt PCF80 9U8 Vacuum Tubes Matched Pair Philips Miniwatt PCF80 9U8 Vacuum Tubes https://lowtechelec.com/products/3-us-made-6x4-vacuum-tube-lot-of-three-95657 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6784604502_rudo_199df9a0-6798-4e51-aaa9-1852edc9feb8.jpg?v=1789187120 3 US-Made 6X4 Vacuum Tube Lot Of Three 3 US-Made 6X4 Vacuum Tube Lot Of Three https://lowtechelec.com/products/matched-pair-ken-rad-6k7-vacuum-tubes-80516 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8337148223_9v4y.jpg?v=1789272319 Matched Pair Ken-Rad 6K7 Vacuum Tubes NOS-Testing Matched Pair Ken-Rad 6K7 Vacuum Tubes NOS-Testing https://lowtechelec.com/products/2-us-made-24-224-vacuum-tubes-globe-94975 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8008429796_bwyp_5d0f169c-5343-4f03-8a17-becfc0c2fe4a.jpg?v=1789272322 2 US-Made 24 224 Vacuum Tubes Globe Balloon Mesh Plate Lot Of Two 2 US-Made 24 224 Vacuum Tubes Globe Balloon Mesh Plate Lot Of Two https://lowtechelec.com/products/4-us-made-number-type-41-41-vacuum-09290 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8056311879_fegu_84fbbc6b-ec63-4256-9aa3-582fe13b7bb6.jpg?v=1789272320 4 US-Made Number / Type 41 #41 Vacuum Tubes Lot Of Four 4 US-Made Number / Type 41 #41 Vacuum Tubes Lot Of Four https://lowtechelec.com/products/matched-pair-rca-6n7-jan-crc-6n7-vt96-81372 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8195061997_4k50.jpg?v=1789272321 Matched Pair RCA 6N7 JAN-CRC-6N7 VT96 Vacuum Tubes Milspec New-Testing Matched Pair RCA 6N7 JAN-CRC-6N7 VT96 Vacuum Tubes Milspec New-Testing https://lowtechelec.com/products/5-us-made-2d21-vacuum-tubes-lot-of-five-53795 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7652663139_o0i8_4dac76ee-62a2-48f1-84fd-c0e1992c11f3.jpg?v=1789272325 5 US-Made 2D21 Vacuum Tubes Lot Of Five 5 US-Made 2D21 Vacuum Tubes Lot Of Five https://lowtechelec.com/products/rca-jrc9004-9004-vacuum-tube-milspec-nos-83325 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8008332816_9ld0_2cfd41d8-41a9-4898-aa5a-e65e8a686576.jpg?v=1789272914 RCA JRC9004 9004 Vacuum Tube Milspec NOS NIB RCA JRC9004 9004 Vacuum Tube Milspec NOS NIB https://lowtechelec.com/products/radio-shack-realistic-6gf7-6gf7a-gold-pin-97603 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7580652530_c38s_eca24730-e99a-4e77-a33f-ace811979648.jpg?v=1789272916 Radio Shack Realistic 6GF7 6GF7A Gold Pin Vacuum Tube NOS NIB Radio Shack Realistic 6GF7 6GF7A Gold Pin Vacuum Tube NOS NIB https://lowtechelec.com/products/ken-rad-number-type-38-38-vacuum-tube-61501 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8056508001_3aih_4fa02d26-4d87-47b8-8940-5114362c42da.jpg?v=1789272916 Ken-Rad Number / Type 38 #38 Vacuum Tube Engraved / Stamped Base Globe / Balloon Shape NOS-Testing Ken-Rad Number / Type 38 #38 Vacuum Tube Engraved / Stamped Base Globe / Balloon Shape NOS-Testing https://lowtechelec.com/products/rca-1642-us-navy-crc-38233-vacuum-tube-14406 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7628652187_50sp_b92d8c08-bb4d-4c7e-8a21-9a2f651bac09.jpg?v=1789272918 RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base https://lowtechelec.com/products/sylvania-jan-chs-5932-6l6wga-output-tube-54079 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7971202570_2xx2_bd309441-da94-404b-84c1-26401c1ab5cb.jpg?v=1789272917 Sylvania JAN-CHS-5932 6L6WGA Output Tube Milspec / Industrial Version Sylvania JAN-CHS-5932 6L6WGA Output Tube Milspec / Industrial Version https://lowtechelec.com/products/5-general-electric-ge-6cl6-vacuum-tubes-04219 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6683145651_tgdr_eed3b6de-45d5-47cd-b071-c306acfea69b.jpg?v=1789359313 5 General Electric GE 6CL6 Vacuum Tubes Black Plate Lot Of Five 5 General Electric GE 6CL6 Vacuum Tubes Black Plate Lot Of Five https://lowtechelec.com/products/5-us-made-50l6-50l6gt-vacuum-tubes-valves-54755 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6857318452_533m_2bdd7471-65a5-4789-a197-58f20b2744d6.jpg?v=1789359314 5 US-Made 50L6 50L6GT Vacuum Tubes Valves Black Plate Clear Bottle Lot Of Five 5 US-Made 50L6 50L6GT Vacuum Tubes Valves Black Plate Clear Bottle Lot Of Five https://lowtechelec.com/products/matched-pair-general-electric-ge-nickel-04697 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.6708253162_3z37_22e5e25f-14f7-4df8-b8c6-df741e4904e2.jpg?v=1789359315 Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves https://lowtechelec.com/products/matched-pair-sylvania-gray-glass-12by7-73646 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7278857947_dft1_52405fcc-25fd-4d5e-8c70-fe64224947d7.jpg?v=1789359319 Matched Pair Sylvania Gray Glass 12BY7 12BY7A Vacuum Tubes Matched Pair Sylvania Gray Glass 12BY7 12BY7A Vacuum Tubes https://lowtechelec.com/products/38kd6-vacuum-tube-63411 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7605167760_5pax_a4bc4dde-6b79-4f41-a49d-d3cdbc0ae2b1.jpg?v=1789478122 38KD6 Vacuum Tube 38KD6 Vacuum Tube https://lowtechelec.com/products/rca-6af11-vacuum-tube-nos-nib-85954 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8367503195_qgzr.jpg?v=1789478124 RCA 6AF11 Vacuum Tube NOS NIB RCA 6AF11 Vacuum Tube NOS NIB https://lowtechelec.com/products/matched-pair-rca-5879-vacuum-tubes-29611 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8056714231_as9b_8bd592cc-09bd-4cee-8b2f-44cf01dad9a1.jpg?v=1789478125 Matched Pair RCA 5879 Vacuum Tubes NOS-Testing Matched Pair RCA 5879 Vacuum Tubes NOS-Testing https://lowtechelec.com/products/crosley-1q5-1q5gtg-vacuum-tube-nos-nib-64837 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.7604895432_paa9_839394dd-4239-4d6c-9058-572fb61bec0a.jpg?v=1789478126 Crosley 1Q5 1Q5GT/G Vacuum Tube NOS NIB Crosley 1Q5 1Q5GT/G Vacuum Tube NOS NIB https://lowtechelec.com/products/matched-pair-general-electric-ge-6k6-52234 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8011609912_1ud7_1d3c3d1d-0af3-4068-a410-ab9900008bb7.jpg?v=1789478126 Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass https://lowtechelec.com/products/matched-pair-ken-rad-6k6-6k6gt-vacuum-87530 2026-09-16T18:21:56-04:00 daily https://cdn.shopify.com/s/files/1/0397/5344/9631/files/il_fullxfull.8011504074_dxmp_e93be60b-6ef0-4632-806a-af9161291651.jpg?v=1789478127 Matched Pair Ken-Rad 6K6 6K6GT Vacuum Tubes Black Glass Matched Pair Ken-Rad 6K6 6K6GT Vacuum Tubes Black Glass 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