Siemens 5814A (12AU7) in Metal Can filmbox (Matched Pair)
- NOS (New Old Stock, 從未啟用過！)
- 長屏
- 細圓環
- 十字𠝹頂
- 已配對
- 西德製造
- 分析力高, 高低延, 低頻相當厚潤, 古典友合用

被公認是最好的5814A / 12AU7之一！
 
- Nos in original metal can film box.
- Matched pair 
- Made in West Germany
- Long plate, Triple mica and O-getter
Great Series and super rare now in Siemens tubes!