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Mesa Boogie Replacement Valves / 5U4GB-ELECTRO HARMONIX AKA MESA 5U4GB MESA SELECT TYPE 1
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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
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 5U4GB is the Electro Harmonix 5U4GB which Mesa source from the Reflector factory in Russia. 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.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.
To help you identify your valve we have put a picture of the Mesa valve against the factory item. So when you order a 5U4GB Electro Harmonix Mesa Select. You will receive an Electro Harmonix 5U4GB 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
Mesa Boogie feel the EH 5U4GB Rectifier is the very best overall 5U4 and is their rectifier valve of choice in the production of all new Mesa amps. The valve is that is extremely reliable and consistent as well as being much more compact. The valve has the traditional vintage sag, amazing feel and exceptional overall quality.
Watford Valves says
The 5U4GB Electro Harmonix Mesa select Rectifier supplies the same feel, same compression, same performance only cheaper.
5U4GB Rectifier Valves are used in MESA Dual and Triple Rectifiers, Road King, Roadster, Stiletto Ace Deuce & Trident & Lonestar
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