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.


Order By
Total : 33 | Page 2 of 2
  • NameManufacturerCommentStockPrice PhotoOrder
  • ECC83/ 7025 HARMA DR250Harma ValvesThe Harma 7025 STR DR250 is a close sounding recreation of the famous USA made 7025 valve.The valve supplies a tight ...In stock£12.00Buy Now
  • ECC83/ 7025 HARMA DR270-Hi GainHarma ValvesA specially selected super gain version of the Harma ECC83/7025 for the guitarist who wants the maximum gain whist ...In stock£15.00Buy Now
  • EL34/ E34L-HARMA STRHarma ValvesThe Harma STR E34L has found favour with many professional rock guitarists since it was road tested by Ben Matthews of ...In stock£16.00Buy Now
  • EL34/ E34L-HARMA STR MESA SELECTHarma ValvesMesa Select for use in Mesa Boogies

    This valve is specially selected to run in Mesa Boogies fixed bias ...
    In stock£18.00Buy Now
  • EL34/ HARMA-RETROHarma ValvesThe Harma EL34-Retro is based on the famous Mullard EL34 and has a number of important features over standard EL34 ...In stock£18.00Buy Now
  • EL34/ HARMA-RETRO MESA SELECTHarma ValvesMesa Select for use in Mesa Boogies

    This valve is specially selected to run in Mesa Boogies fixed bias ...
    In stock£20.00Buy Now
  • EL84/ E84L HARMAHarma ValvesThe Harma E84L is a high quality special application military valve which has a number of unique features. The valve is ...In stock£16.50Buy Now
  • EL84/ E84L HARMA Burst TestedHarma ValvesThe Harma E84L Burst Tested The Harma E84L is a high quality special application military valve which has a number of ...In stock£18.00Buy Now
  • EL84/ HARMA-RETROHarma ValvesThe Harma EL84 Retro is a recreation of the famous Mullard EL84 and follows the original design and electrical ...In stock£15.00Buy Now
  • EZ81/ 6CA4-HARMA RETROHarma ValvesThe Harma EZ81 Retro is based on the European design used by Mullard and Philips in the 1960s for military ...In stock£15.00Buy Now
  • GZ32/ 5V4GA-HARMAHarma ValvesThe HARMA GZ32 is a full wave rectifier that has been designed for use in guitar amplifiers as well as audio ...In stock£20.00Buy Now
  • GZ34/ 5AR4-RETRO HARMAHarma ValvesThe Harma GZ34 Retro design is based on Mullardís famous military GZ34/ CV1377.It uses Mullardís compact serrated ...In stock£18.00Buy Now
  • KT66-HARMA-RETROHarma ValvesThe Harma KT66-Retro is a meticulous recreation of the famous Marconi Osram KT66 and follows the original design and ...Sold Out£35.00Buy Now
Total : 33 | Page 2 of 2
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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