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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.
- NameBrandCommentStockPrice PhotoOrder
- 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£22.00
Buy 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£22.00
Buy Now - ECC83-HARMA STR BALANCEDHarma ValvesSpecial balanced item with matched sections for use in phase inverter position, tube microphones or input positions ...In stock£20.00
Buy Now - ECC83/ 5751-HARMA STR HGHarma ValvesThe Harma 5751 STR has been specially selected to offer reduced distortion and gain level. All modern made 5751 do not ...In stock£20.00
Buy 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£20.00
Buy Now - 6N1P VI-HARMA MATCHED PAIRHarma ValvesSpecial Matched Pairs
This is a special balanced version with matched triode sections available in matched ...In stock£18.00
Buy Now - ECC83/ 12AX7WA-HARMA VINTAGE BALANCEDHarma ValvesSpecial Balanced item
This is a specially matched version with balanced output from each triode section. These ...In stock£20.00
£18.00
Buy 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£16.00
Buy 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£16.00Buy Now
- ECC83/ 12AX7WA-HARMA VINTAGEHarma ValvesThe Harma 12AX7WA Vintage has been designed around the medium length ribbed anode plate design of the Mullard ECC83 in ...In stock£
18.00
£16.00Buy Now - 6N1P VI-HARMAHarma ValvesSpecial Offer very low stock
The Harma 6N1P VI is a special long life, low noise selected version of the 6N1P. ...In stock£22.00
£14.00Buy 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£10.00
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