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Mesa Boogie Replacement Valves / GZ34-JJ AKA MESA GZ34 MESA SELECT TYPE 3
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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.
Watford Valves have been supplying specially tested valves for Mesa Boogie amplifiers for over 25 years. To help you maintain the sound we have now put a picture of the original factory item next to the Mesa label item to help you identify the valves in your Mesa.
Mesa normally gave a separate STR number to each valve which would normally indicate a different factory. Recently Mesa have given the same STR numbering to valves from different factories. To aid your identification we have given the valve a type number, type 1 type 2 etc.
What makes WV Mesa Select valve ?
Our matching process as stringent if not more so with valves matched on plus-or-minus 2 mA of current. Just like Mesa, valves that will reduce power or not be within the range of your amps optimum performance will not make the grade. Just like all Harma output valves our Mesa select valves also undergo our own unique real world burst testing. The burst testing process involves a series of varying timed electrical signal bursts. This runs the valves under the same stress conditions that they will meet in your amplifier. We have spent over 25 years helping Mesa owners maintain their amps factory sound without compromise on testing and selection.
The Mesa 5AR4/GZ34 Type 3 is the JJ GZ34S which Mesa sourced in recent years from the JJ factory in Slovakia. This valve can be identified by the rectifiers rounded top, the anode plate structure has 6 staple holes in the each side of the plate, star ends to the top mica and taller glass envelope . we call it type 3.Mesa normally gave a separate STR number to each valve which would normally indicate a different factory. Recently Mesa have given the same STR numbering to valves from different factories. To aid your identification we have given the valve a type number, type 1 type 2 etc.
What makes WV Mesa Select valve ?
Our matching process as stringent if not more so with valves matched on plus-or-minus 2 mA of current. Just like Mesa, valves that will reduce power or not be within the range of your amps optimum performance will not make the grade. Just like all Harma output valves our Mesa select valves also undergo our own unique real world burst testing. The burst testing process involves a series of varying timed electrical signal bursts. This runs the valves under the same stress conditions that they will meet in your amplifier. We have spent over 25 years helping Mesa owners maintain their amps factory sound without compromise on testing and selection.
So here you are buying a selected JJ GZ34S which is not branded Mesa Boogie but has the original JJ factory markings selected by us to the same specs
We have been supplying specially selected valves for Mesa Boogie for over 25 years and have a huge library of their original factory source and test specifications.
To help you identify your valve we have put a picture of the Mesa valve against the factory item. So when you order a GZ34 JJ Mesa GZ34 type 3 Select Slovakian Manufacture. You will receive a JJ GZ34S that has been tested and specially selected to work perfectly in your Mesa Boogie.
Watford Valves Mesa Select rectifiers valves undergo our real world testing under the same stress conditions that they will meet in your amplifier. All rectifiers voltages are dual selected on forward and reverse parameters. This will ensure that you get the best selected valves available
Mesa Boogie says
The Mesa 5AR4/GZ34 Rectifier Tube produces a vintage feel with light to mild sag. While it produces more sag than Silicon Diodes, it is the least saggy of our tube rectifier offerings. Used in vintage MESA amps like the Heartbreaker, Blue Angel and Maverick
Watford Valves says
Our GZ34 JJ Mesa Select supplies the same feel, same compression, same performance only cheaper.
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