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Mesa Boogie Full Revalve Kits / Mesa Lonestar Harma STR 5881 Full Upgrade Kit
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
A test report is available click here to view
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
A test report is available click here to view
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.
This Mesa Lonestar Harma STR 5881 Full Upgrade Kit It is designed to give your Mesa a tight punchy rock sound with an aggressive edge warm earlier break up with a tight and clear bottom end slam. The Standard gain Pre amp kit combined with the Harma 5881 output valves which are the same as the Mesa 6L6/5881 STR 425 provides a very versatile sound that suits the majority rock and metal players and heavier musical styles. The nice sonic character of the 5881 in Boogies is that it breaks up sooner than a 6L6GC thus giving the crunch and hitting the harmonic sweet spot earlier.
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. 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 10 valves.
4 Specially Selected Harma ECC83 STR for positions V1 to V4
1 Specially Selected & Balanced Harma ECC83 STR for V5
4 Specially Selected & Matched Harma 5881/6L6 Military Spec
1 Specially Selected Philips 5U4GB
Please note this upgrade kit is for the valves only
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