EL34「英國後級」

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  Sound Sales Senior和Audiomaster 11A，Armstrong A10 MK.II、Lowther LL16、Lowther LL10、Lowther TP10、Connoisseur HQ20、Rogers Senior、Rogers Senior II、Rogers Master、Chapman 205、BTH MK.1、Beam Echo DL7-35、Dynatron LF20、Radford MA15、Radford STA-12、Pye HFS-20...etc。