1 pair) 408A Western Electric used/tests like new 1965-1966
1 tube) 91/60 (1966)
1 tube) 97/60 (1965)
Tested on B&K
above 70 is good
20V Filament
– Yamamoto HA-02 Headphone Amp
– Little Dot Hybrid I+
$12.60 $41.99
1 pair) 408A Western Electric used/tests like new 1965-1966
1 tube) 91/60 (1966)
1 tube) 97/60 (1965)
Tested on B&K
above 70 is good
20V Filament
– Yamamoto HA-02 Headphone Amp
– Little Dot Hybrid I+
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