Mesa Boogie Full Revalve Kits / Mesa Heartbreaker Stan gain 5881 Full Revalve Kit

Mesa Heartbreaker Stan gain 5881 Full Revalve Kit Mesa Heartbreaker Stan gain 5881 Full Revalve Kit Click on image(s) above to view larger

All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.

These are specially selected full revalve kits for Mesa Boogie owners. The sets consist of specially position selected pre amp valves that have been selected for each position in your Mesa. We have 2 pre amp kits, Standard gain, to give a warm and fat overdrive and Our Classic kit provides boogie owners with a valve close in tone to the vintage Mullard ECC83. In terms of 6L6GC we have selected sets available that will work with the boogies fixed bias arrangement. Certain 6L6GC will be better for certain kinds of music and these we have indicated in our product description.
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This full revalve kit consists of a Standard gain pre amp kit combined with the Harma 5881 output valves and a Harma Retro 5AR4/GZ34 rectifier.

This kit is for the Mesa Heartbreaker where it is fitted with the stock 6L6GC types and replaces the 6L6GC with 5881.
It is designed to give your Mesa Heartbreaker more clarity, smooth warm overdrive with tight fat punchy lows.

The Harma ECC83 STR is used as it has a number of advantages over other 12AX7 types such as reduced microphonics and better isolation from vibration. This is particularly useful in combo applications. The valve is very well balanced with nice even bass which has plenty of depth. The mid range is clean and transparent which removes the mush and fizz that happens when Boogies are overdriven.

The Harma 5881 is the original Military grade button based item that Mesa used as the STR-425.This valve is one of the most reliable 6L6 types ever built with decades of use in Military applications. This valve removes the midrange mushiness and flabby bass associated with the Chinese made STR-440. If you scoop out the mids then this is an ideal choice as this valve does not go thin and tinny like some 6L6GC. The Harma 5881 produces a well balanced thick sound that is ideal for Metal, Hard rock and fusion styles.

The kit consists of 12 valves.

6 Specially Selected Harma ECC83 STR for position
1 Specially Selected & Balanced Harma ECC83 STR in V5,
4 Specially Selected Harma 5881/6L6 Military spec output valves
1 Selected Harma Retro GZ34/5AR4



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