(!!) (BEST PAIR) EL153 Telefunken NOS 1960's (72ma and 74ma)
$ 198.88
1 matched pair) EL153 Telefunken NOS 1960's original boxes
1 tube) 72ma Gm=4500
1 tube) 74ma Gm=4400
Tested on Amplitrex
Vplate=500V
Vscreen=250V
Vgrid=-49V
Good Ma = 50ma
Good Gm = 4000
notes:
10 pins
Power Tetrode
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