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Marshall 50/50 Power Amp Standard Retube Kit

Our Products: Full Retube™ kits for Guitar Amps > Retube™ Kits For Marshall > Marshall 50/50

Price: $200.00

Marshall 50/50 Power Amp Standard Retube Kit

Product Details

This is the Standard Retube Kit for the Marshall 50/50 Power Amp. The front end uses two Matched and Balanced ECC81's and two Matched and Balanced ECC83S's. The default power tubes are a matched quad of the JJ E34L's, but you can configure this kit to use the JJ EL34II's, EL34’s, KT77’s or Big Bottle 6CA7’s by clicking on the "Customize" button.

The two ECC81's replace the two 12AT7's and the two Matched and Balanced ECC83S's replace the 12AX7's.

The bias pots are accessed from the bottom of the amp, there are four small holes and the two outside holes on each side are the bias trimmers. We use bias probes to test and set the bias on these amps. You can bias one tube on one side and then one tube on the other side.

You can use our Generic Bias Video for reference.

The video below explains the difference between bias probe types.

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