Please use the Shopping Cart to group your items together so you can make one payment and pay one shipping charge. This relay allows the tube filaments to heat up quickly so that the amplifier is ready when the needle hits the record. This item is used but in good condition. The coil measures about 130 ohms.
Thank You.
I believe the Guardian part number is 25233.
The 501 amplifier is original equipment in the models 750, 750-E, 780, 780-E, 850 and 950
and the model 503 amplifier is found in the Wurlitzer models 1015 and 1080.
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