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Mesa Boogie Replacement Valves / EL34-ELECTRO HARMONIX MESA SELECT AKA MESA EL34 STR 447
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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.
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 EL34 STR 447 is the Electro Harmonix EL34 which Mesa sourced from the Reflector/Sovtek factory in Russia. This valve can be identified by its slim design the anode plate has 4 slatted holes in centre of the plate, double supported getter and round shark mica top and bottom . Each side of the anode plate has 4 stapled holes.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 Electro Harmonix EL34 which is not branded Mesa Boogie but has the original EH markings selected by us.
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 Electro Harmonix EL34 AKA Mesa EL34 STR 447. You will receive a Electro Harmonix EL34 that has been tested and specially selected to work perfectly in your Mesa Boogie.
Watford Valves Mesa select valves 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.
All output valves are then dual matched by us on current and gain. This will ensure that you get the best selected valves available
Mesa Boogie says
The Mesa EL34 STR 447 is a premium grade EL34 that has a traditional EL34 tone & feel that is very urgent and aggressive and is an excellent choice for all styles of gain, especially classic rock, alternative rock & metal. Our very best overall EL34 for authentic British tone - Excellent structural quality provides exceptional consistency and reliability
Watford Valves says
Our EL34 Electro Harmonix Mesa Select supplies the same feel, same tonal quality, same performance as the original and is for those of you who want the British tone sound of the of the EL34 STR 447
Used in: : Road King, Stiletto Ace, Stiletto Deuce, Stiletto Trident - Substitute in: Solo 50, Rect-O-Verb, Dual Rec, Triple Rec, Roadster, Mark IV (outside sockets only), Lone Star, 2:50 & Recto 2:10
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