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CH23 t1_j62wjq9 wrote

Reply to comment by TheHelpfulDad in Was very curious on what those are? From a Randy Newman video circa '72. Can anyone ID them? They look so peculiar by Beanlipe

hd424x specifically. The normal hd424 has black sides, the 'x' has silver ones

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tomato432 t1_j638wei wrote

black plastic labels is the later 600 ohm version, both the original 2000 ohm HD424 and HD424X have silver metal caps, the only visible difference between 2000 ohm HD424 and HD424X is the name on the packaging

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CH23 t1_j63he5n wrote

I believe also tge colour of the driver housing, which was white on (some) hd424x

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