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Fender Concert & Concert II SRV Retube Kit

Our Products: Full Retube™ kits for Guitar Amps > Retube™ Kits For Fender > Fender Concert & Concert II

Price: $200.50

Fender Concert & Concert II SRV Retube Kit

Product Details

It's no secret that Stevie played his amps cranked and preferred a little cleaner sound from the front end allowing you to hear more power tube breakup. This kit uses a JJ 5751 for V1 which is in-between an ECC81 and an ECC83S in gain, along with four standard ECC83S, one standard ECC81, and a balanced ECC81 for the phase inverter. More headroom from the clean channel and a sweeter sound! The default power tubes are a matched pair of the JJ 6L6GC’s but you can configure this kit to use the JJ 5881’s by clicking on the "Customize" button.

Most of these amps were fixed bias from the factory but over the years many have been modified to be adjustable bias. If you choose to use the JJ 5881's your amp needs to be adjustable bias and the bias must be set.

Tube location info: The 5751 is located in V1 farthest from the power tubes. The Balanced ECC81 is located in V7 closest to the power tubes and the standard ECC81 is located in V3.

All Combo amp Retube Kits are shipped with the Eurotubes Double Mica 6L6GC’s at no extra charge. JJ Electronic started building us a proprietary version of their 6L6GC (the 6L6GC-DM) in 2005 with extra layers of mica. This reinforces the plate structure and all but eliminates tube rattle symptoms.

If your amp has been modified to be adjustable bias then all you need to adjust the bias on a these amps is a multimeter and a bias probe or one of our "Pro One" probes. These are are available in the "Related Products" tab.

We typically bias the JJ 6L6GC's in these amps to between 36 to as high as 44mA or 33 to 40mA for 5881's.

You can use our Generic Bias Video for reference.

The video below explains the difference between bias probe types.

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