303 °³
TUNGSOL
0
 4,500
G.E.C
450,000
 3,200
AMPEREX
0
 2,700
ÀÏ·ºÆ®·ÎÇϸð´Ð½º
95,000
 500
MULLARD ȸ¿ø´Ô²²¸¸ °ø°³
RCA
40,000
 250
ELECTRO-VOICE ȸ¿ø´Ô²²¸¸ °ø°³
G.E.C
0
RCA
50,000
 480
TELEFUNKEN ȸ¿ø´Ô²²¸¸ °ø°³
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