I don't have a clue about what is a Philco Dynamic Tester or what it did back in 1946. Quite frankly, I don't care. I want to believe it was used to carry the navigational computers inside Inter-Continental Ballistic Missiles.
I also don't care because it just looks perfect as an iPod dock, using a "10-watt solid-state amplifier and a high quality Blaupunkt 5 1/4" coaxial loudspeaker with a massive ceramic magnet." [Pete Verrando via Retrothing]