・遊休
717A - 293A(Pentode, NFB) // 351A ver. 10/24/2026 102L - 205D // 274A ver. 04/27/2025
6SL7GT - 2A3/45 // 5Z3/80 ver. 04/25/2025 SRPP - Various Output Tubes // Rectifier ver. 02/11/2023



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