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Amplifier, McIntosh MC-60, testing output tubes in 17-5-12@ Amplifiers, Telefunken, w/ LRS Relay 8-4-7* Amplifiers, WE 8-A, 9-A, 10-A, 11-A SP18@ Amplifiers, audio. All-12SN7 4-3-RC* CBS, unusual phono amp 17-6-56* CW-776, WE (pic) 8-2-28. Direct-coupled, '20s SP11-1. Federal Telegraph Co. SP11-16@ Signal Corps / WECo, U. S., WW I 17-5-24@ ................
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