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Mesa Boogie Cryo Pre Amp Kits / Mesa 4 Valve High Gain Harma 7025 STR Pre Amp Upgrade Kit Cryo
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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.
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 preamp/front end sets 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 4 kits such as Low gain, This to give the maximum clean headroom, Standard gain, to give a warm and fat overdrive and Hi gain to give you maximum over drive with the lowest noise. Our 4 th Kit, called the Vintage provides boogie owners with a valve close in tone to the vintage Mullard ECC83 with the sparkling highs of the American General Electric 12AX7WA. So you can the best set to suit your playing style.
These Cryogenically treated valves are tested and selected to give the best sonic performance out of your Mesa Boogie amplifier.
Maximum DriveWe have 4 kits such as Low gain, This to give the maximum clean headroom, Standard gain, to give a warm and fat overdrive and Hi gain to give you maximum over drive with the lowest noise. Our 4 th Kit, called the Vintage provides boogie owners with a valve close in tone to the vintage Mullard ECC83 with the sparkling highs of the American General Electric 12AX7WA. So you can the best set to suit your playing style.
These Cryogenically treated valves are tested and selected to give the best sonic performance out of your Mesa Boogie amplifier.
Early Break up
Harma 7025 STR Preamp Cryo Upgrade Kit It is designed to give your Mesa amplifier the maximum drive and early break up. This is really for the people that really want every ounce of gain. Designed to provide more treble clarity and top end punch when using high gain settings enabling you to get the best out of your Mesa
The Harma 7025 Cryo is a selected high gain valve that supplies a tight and deep controlled bottom end sound with excellent midrange punch. The top end is clear sound and it has a nice early harmonic crunch. This provides the right amount of top end focus and bottom end slam to satisfy the demands of the even the heaviest of sounds.
The Cryo treatment gives a permanent change to the valves performance. The additional benefits such as better clarity, larger and improved sound stage with increased definition under distortion
with more top end bite and less fizz when using modern high gain settings
This kit is for Mesa that use 4 ECC83/12AX7 In the pre amp section
The kit consists of 4 valves
3 Specially Selected Harma 7025 DR250 Cryo for V1 to V3
1 Specially Selected & Balanced Harma 7025 DR250 Cryo for V4
Please note that the kit is for the valves only
All Harma preamp valves are Dynamically Drive tested under real working condition have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
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