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lenbone said:
It's time for fresh tubes for the "Fender 75" I have to replace the pre-amp tubes.The tubes in there now are 7025's (3) 12AT7's (2) 6L6GC (2). Wich ones are the Pre-Amp tubes?--L.B.
7025s are preamp/reverb related.
12AT7s are most likely Phase Inverter and/or Reverb.

Most likely want to replace all 5. Remember where to put them back to.
 
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