Amplifiers not in daily use : Various power tubes

RCA 6SL7GT - RCA/Cunningham 2A3/45 // RCA/Cunningham 5Z3/80    ver. 04/25/2025

Siemens ECC801S - Siemens EL34 (triode connection) // Siemens GZ34    ver. 02/01/2023

16種の直熱/傍熱 三極管/多極管三結向け

Amplifiers : AD1, PP3/250, 205D and 300B

常用のアンプ（欧州大陸、英国、米国 x 2）

Tungsram/Valvo EF6 - Tungsram/Valvo AD1 // Tungsram/Valvo AZ12    ver. 09/12/2025

 

Mazda AC2/HL - Mazda PP3/250 // Mazda UU120/350    ver. 08/18/2025

 

WE 102L (6126 x 2) - WE 205D // WE 274A (5926)    ver. 04/27/2025

 

 WE 310A small punch (Aug.'40/Aug.'39) - WE 300B (5639 x 2) // WE 274A (6713)    ver. 09/21/2019