Mesa Boogie Cryo Full Revalve Kits / Mesa Bass 400+ 6L6GC Harma Retro Classic Cryo Full Revalve Kit

Mesa Bass 400+ 6L6GC Harma Retro Classic Cryo 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 all EU countries.

Our Mesa Boogie specially selected Cryo full revalve kits are designed to enable you to get the best sound out of your Mesa Boogie amplifier. These sets consist of specially position selected Cryo treated pre amp valves that have been selected for each position of your Mesa amplifier. In the output stage we use specially cryogenically treated valves that have been selected to work with the Mesa boogies fixed bias arrangement. Certain output valves will be better for certain kinds of music and therefore to make your choice easier we have indicated this in our product description. Mesa Boogie amps have pioneered the way in multi channel high gain amplifiers and with these cryogenically treated valves sets this will take your sound to a new level.
15% Discount

This full revalve kit consists of specially selected Harma Retro Cryo valves for Mesa Boogie amplifiers. This set has been designed to give your Mesa more top end transparency and the classic warm tone which many players require out of their Mesa amplifiers.

The pre amplifier valves are specially selected for Mesa amplifiers for low microphonics and gain and the kit includes a balanced valve for the phase inverter position.

The output valves have been specially burst tested as all Harma output valves are under real working conditions to ensure the utmost reliability. The output valves have also been specially selected to run with Mesas non- adjustable fixed bias arrangement.

The Harma ECC83 Retro Cryo pre amp valves offer more harmonic warmth with more transparency in the midrange than 12AX7 Russian 2 or the Electro Harmonix 12AX7. The outstanding feature of the Harma ECC83 Retro Cryo is its smooth linear midrange response and clarity. So you get a smooth warm sound with tight fat punchy lows. This has become our most popular pre amp valve for Mesa amplifiers.

The Harma 6L6GC Retro is a re issue of the famous Sylvania STR 387. It features the same anode plate design with internal bracing and has extra thick mica spacers with steel spacers which reduces vibrations, rattle and microphonics which is a problem with many modern 6L6GC.

Sound wise, the Harma 6L6GC Retro provides a clear extended treble response and a warm rounded sound with more midrange content than the 5881 type, this is particularly useful if you are using a passive bass. The Cryo treated version offers more clarity, cleaner more defined bass and a musical sparkle in the top end when compared to the standard item.

The Cryo 6L6GC Harma Retro offers new old stock sound quality with a modern price tag and is the ideal upgrade for all 6L6GC powered Mesa Bass amplifiers.

The full upgrade kit consists of 16 valves

3 Specially Selected Harma ECC83 Retro Cryo.
1 Specially Selected and Balanced Harma ECC83 Retro Cryo.
12 Specially Selected Harma 6L6GC Retro Cryo in two identical sextets



Facebook Twitter Follow us on Instagram