Tube type list
Tube 6K4 (FX tubes put in accessories) - Audiophonics
GSTube.com''. Tubes, sockets etc. Parameters and characteristics 6k4
6К4П, Tube 6К4П; Röhre 6К4П ID18809, Vacuum Pentode | Radiomuseum.org
electron Tube Data sheets - 6
6K4_China, Tube 6K4_China; Röhre 6K4_China ID33930, Vacuum P | Radiomuseum.org
Ian Drew, Tube collection Drew, Great Britain (UK), FU-7 Com | Radiomuseum.org
Tube type list
Tube List (English)
Vacuum Tube 6K4 Military Grade for Tube FM Radio Tuner Inventory – IWISTAO HIFI MINIMART
Tube List (English)
6K4_China, Tube 6K4_China; Röhre 6K4_China ID33930, Vacuum P | Radiomuseum.org
6K4 @ The Valve Museum
Vacuum Tubes 7-Pin 5654W Upgrade for 6AK5 6J1 6J1P EF95 6k4 replacemen – Fosi Audio
Russian and Chinese Tube Substitutes
Tube type list
6К4П, Tube 6К4П; Röhre 6К4П ID18809, Vacuum Pentode | Radiomuseum.org
Tube List (English)
6K4 @ The Valve Museum
Tube 6K4 (FX tubes put in accessories) - Audiophonics
Davitu Electrical Equipments Supplies - 2pcs tube 6A2 6K4 6Z4 6N2 6P1 - (Color: 6A2) - Amazon.com
Free shipping French 6BA6 Electron tube vacuum valve Can replace EF93 6k4 5749 vacuum tube amplifier Audio Amplifier Accessories
Amazon.com: Docooler 6K4 Preamp Vacuum Tube, for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube, Amplifier DIY Preamp Vacuum Tube,2PCS : Electronics
2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube - Newegg.com
Tube 6K4 (FX tubes put in accessories) - Audiophonics
LINLAI 211 Vacuum Tube Replaces 211-TA WE211 211-DG 211-T 211-TII E-211 Electronic Tube Audio Amplifier 4pcs Matched Quad Hifi - AliExpress
