Products > Valves > Harma Valves

Watford Valves have been using valve equipment since 1976 and has been selecting and supplying valve to the professional market for over 20 years. The term 'new old stock' refers to tubes or valves which are new but are from factories which have long closed down. These factories such as Mullard, G.E.C, Telefunken, Siemens, Philips, General Electric and R.C.A produced some of the best valves ever made which is why these items have become very sought after in the music industry. Watford Valves keeps a huge inventory of new old stock tubes valves as well as current production items. Therefore Watford Valves can offer one stop shopping to satisfy the most demanding of needs of the professional market, the collector or the enthusiast. All output tubes valves are priced individually. All prices contained on this web site are exclusive of VAT.

Harma valves consist of a selected range of valves that are chosen after meeting stringent standards for sound quality and reliability. These valves are sourced from current production as well as some of the finest Nos valves available. Unlike our competitors no Harma valves, past or present has been made in China. Harma valves represent the finest available items of their type available.

Harma valves are tested using a range of custom designed and built test rigs which are unique to Watford valves.These unique tests are not offered by any other valve supplier in the world.

All Harma pre amp valves undergo the drive rating system; the valve undergoes a series of through tests under full operational conditions. This involves a controlled burn in process to ensure perfect stability and correct ageing. A shock and vibration test, microphoney, hum, and a balance and symmetry test.

All Harma output valves undergo our own unique real world burst testing. No other supplier tests valves this way. 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 especially when overdriven. All out put valves are then dual matched by us on anode current and gain. This will ensure that you get the best selected valves available anywhere in the world.

Order By
Total : 33 | Page 2 of 2
  • NameManufacturerCommentStockPrice PhotoOrder
  • 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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