Do you like fat mids a more vintage tone and little extra high end sparkle? This is our ECC803S V1 Option Retube kit for the Carr Impala. This kit contains a Long Plate ECC803S for V1, a standard ECC81 for V2, a 5751 for V3 and an ECC81 for V4. 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.
All that's necessary to check and adjust the bias is a Multimeter. If you don't have one these are available under the "Related Products" tab.