GEC Brown base, clear glass KT66, 7337 Z Codes
The M-O Valve Company Limited
Brook Green Works, Hammersmith, London, W6 7PE, England
Matched quad, all same codes …
tubes.rs – Tube amplifiers & NOS tubes
GEC Brown base, clear glass KT66, 7337 Z Codes
The M-O Valve Company Limited
Brook Green Works, Hammersmith, London, W6 7PE, England
Matched quad, all same codes …