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| 6Н1П https://en.wikipedia.org/wiki/6N1P |
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| 6Н23П - 6N23P |
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| 6Ж1П (6j1p), 6Н6П (6n6p) |
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| 6N1P, MJE350 |
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| 6j8, 6a7 |
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| EL86 (RADIOLAMP ANALOG 6П33П,6CW5) |
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| PCL805 or PCL86 |
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| EL84, UL84 |
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| 6Р4П (6R4P), PFL200 |
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| 6Р4П (6R4P), PFL200 |
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| UCC85, UL84 |
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| PCL86 |
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| PCL86 |
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| PL81 (BX998A) |
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| EBC41, PL81, ECC83, EL84 (BX998A) |
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| Siemens D3a / 7721 |
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| Siemens D3a / 7721, BC557, MJE350 |
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| D3a, Two Terminal constant curent sourse K&K Audio |
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| 6n23p, KT3107, ZTX757 |
Kopējā katoda kaskāde (KKK) un kaskāde ar kopējo anodu (KKA):
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| 6Р4П (6R4P), PFL200 |
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| 6j2p, germanium P609A, 1T308V |
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| EF86 |
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| 6Ж1П (6j1p - EF95, 6F32, 6АК5) |
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| 6n2p, 6n1p, 6n23p, 6n6p |
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| 6Р4П (6R4P), PFL200 |
