Harma Valves


The Harma diamond premium grade valve range is sourced from the best current production and new old stock available today.

The range was established in 1995 and has been as a result of the demand from the professional music industry for a high quality tested valve that will work under the most rigorous conditions.
The valves have been road tested by the major U.K hire companies and high profile musicians. Our S.T.R E34L has been tested and is used by Ben Matthew's of British rock band Thunder for example.
All the valves are tested and selected on our high plate volt tester. This rig runs the valves in real working conditions at high voltages 500 vdc plate and screen for instance for a 6L6 type.

The valves under go tests for cathode heater insulation, heater continuity, gas and are matched via the quitescent current method after undergoing six shifts in bias voltage to ensure perfect curve tracking. This ensures total reliability in touring environment which is why these valves come with one of the longest warranties in the business. 6 months on Pre- amp and output valves.


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  • NameBrandCommentStockPrice PhotoOrder
  • 12BH7A-HARMAHarma ValvesLimited stock only 3 left

    The Original Harma 12BH7A which was our most popular valve for high end audio ...
    In stock£30.00Buy Now
  • 12BH7A-HARMA RETROHarma ValvesThe Harma 12BH7A Retro design is based on the original USA made General Electric 12BH7A. It has a number of features ...In stock£38.00Buy Now
  • 12DW7/ 7247-HARMA STRHarma ValvesThe Harma 12DW7 STR is based on the American dual plate design that was popular in the late 1960’s. It has been ...In stock£26.00Buy Now
  • 5881-HARMAHarma ValvesThe Harma 5881 is the original button based Russian military valve that powered the Marshall and Mesa Boogie amps (STR ...In stock£30.00Buy Now
  • 5881-HARMA MESA BOOGIE 400+ OUTPUT SETHarma ValvesSpecial Offer 15% Discount

    This is a specially selected matched set of 12 5881 valve for owners of the Mesa ...
    In stock£360.00
    £306.00
    Buy Now
  • 5881-HARMA MESA SELECTHarma ValvesMesa Select for use in Mesa Boogies

    This valve is specially selected to run in Mesa Boogies fixed bias ...
    In stock£30.00Buy Now
  • 6072A/ 12AY7-HARMA RETROHarma Valves6072A 12AY7 Harma Retro is a specially selected valve for use in high end audio, valve microphones and first position ...In stock£32.00Buy Now
  • 6072A/ 12AY7-HARMA STRHarma ValvesThe Harma 12AY7 STR plate construction is based on the famous frame grid plate design that was pioneered in Germany by ...In stock£22.00Buy Now
  • 6GK5/ 6FQ5-HARMA STRHarma ValvesThe Harma 6GK5 been selected for use in Conrad Johnson amplifiers. These valves offered a number of sonic benefits over ...In stock£10.00Buy Now
  • 6L6GC-HARMA RETROHarma ValvesRecreation of the Sylvania STR 387

    The Harma 6L6GC Retro is a re issue of the famous Sylvania STR 387 that was ...
    In stock£32.00Buy Now
  • 6L6GC-HARMA RETRO MESA SELECTHarma ValvesMesa Select for use in Mesa Boogies

    Recreation of the Sylvania STR 387

    The 6L6GC Harma Retro Mesa select ...
    In stock£36.00Buy Now
  • 6N1P VI-HARMAHarma ValvesThe Harma 6N1P VI is a special long life, low noise selected version of the 6N1P. The valve was designed for military ...In stock£14.00Buy Now
  • 6N1P VI-HARMA MATCHED PAIRHarma ValvesSpecial Matched Pairs

    This is a special balanced version with matched triode sections available in matched ...
    In stock£18.00Buy Now
  • ECC81-HARMA STRHarma ValvesThe HARMA ECC81 STR is a German manufactured valve that has been specially chosen for its outstanding performance and ...In stock£16.00Buy Now
  • ECC81-HARMA STR BALANCEDHarma ValvesThe Harma ECC81 STR Balanced version is a specially balanced valve for use as a phase splitterThe Harma ECC81 STR is a ...In stock£20.00Buy Now
  • ECC82-HARMA RETROHarma ValvesThe Harma ECC82 is designed on the ladder plate design that was used by Mullard and Philips.The valve plate features ...In stock£25.00Buy Now
  • ECC83-HARMA RETROHarma ValvesThe Harma ECC83 Retro is a true sounding recreation of the famous Mullard ECC83.It produces a harmonically rich and ...In stock£25.00Buy Now
  • ECC83-HARMA RETRO BALANCEDHarma ValvesSpecial Balanced item

    The Harma ECC83 Retro balanced is a true sounding recreation of the famous Mullard ...
    In stock£28.00Buy Now
  • ECC83-HARMA STR Harma ValvesThe Harma ECC83 STR features an internally rugged construction with thick mica supports. This has a number of ...In stock£18.00Buy Now
  • ECC83-HARMA STR BALANCEDHarma ValvesSpecial Balanced item

    Special balanced item with matched sections for use in phase inverter position, tube ...
    In stock£20.00Buy Now
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by all EU countries.


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