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Watford Valves was the first Company in the World to offer a cryogenically treated valve brand range showing huge commitment to the proven scientific cryogenic process.
The Harma Diamond deep cryogenically treated valve range offers the musician and audiophile valves which are not only specially selected and tested, but are cryogenically treated for the ultimate performance. We also offer a full range of cryogenically treated valves made by the great factories of the past, such as Mullard, Telefunken, Philips as well as modern brands such as Groove Tubes, Tube Amp Doctor, JJ Electronic (formally Tesla), Electro Harmonix and Sovtek. So whatever is your preferred make Watford Valves will have a cryogenically treated version in stock.
What are the benefits of using cryogenically treated Valves?
The cryogenic process offers permanent change to the metals microstructure. The reduction in electronic noise improves the valves noise floor leading to lower microphonics. Until now clear note definition, musical complexity and rich harmonic content was only attainable by using rare and expensive new old stock classics.
Many guitarists have found the dramatic effect cryogenic treatment has on the way the valve performs not only in clean applications but also when overdriven. The cryogenic process removes the harshness from the valves tone and imaging has more focus and bite. It has a warmer sound which is pleasing to listen to, providing a clear and musical distortion. In short, many musicians, engineers and audiophiles have found that by using cryogenically treated valves it is a proven way of obtaining NOS sound quality with a great difference, an affordable price!
We offer a full range of cryogenically treated valves Harma Diamond Cryogenically treated valve range- High quality at an affordable price.
Nick Guppy, amp reviewer for the UK GUITARIST magazine wrote
“Compared to NOS Telefunken, the Harma Cryo ECC83 offered an improvement in gain and high frequency response that noticeably enhanced this amps singing lead voice and lush clean sounds”.
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- ECC81/ 12AT7-JJ TESLA CRYOJJ Tesla Cryo Specially Cryo treated JJ ECC81 Cryo is an excellent modern valve that provides low noise and low microphonics. It has ...In stock£24.00
Buy Now - ECC81/ 12AT7-JJ TESLA CRYO MATCHED PAIRJJ Tesla Cryo Special Matched Pair
Specially Cryo treated JJ ECC81 Cryo is an excellent modern valve that provides low noise ...In stock£27.00Buy Now - ECC81/ 12AT7WC-PHILIPS CRYOPhilips ECG JAN CRYOOriginal Military grade JAN specification 12AT7WC Philips that has been specially Cryo treated for use in critical ...In stock£20.00
Buy Now - ECC81/ 12AT7WC-PHILIPS CRYO MATCHED PAIRPhilips ECG JAN CRYOSpecial Matched Pair
Original Military grade JAN specification 12AT7WC Philips that has been specially Cryo ...In stock£25.00Buy Now - ECC82-HARMA STR CRYOHarma Cryo The Harma ECC82 STR CRYO is a specially treated and selected valve for use in critical positions in audio ...In stock£30.00
Buy Now - ECC83-HARMA RETRO CRYOHarma Cryo The Harma ECC83 Retro Cryo is a true sounding recreation of the famous Mullard ECC83.The valve produces a harmonically ...In stock£32.00
Buy Now - ECC83-HARMA RETRO CRYO BALANCED Harma Cryo Special Balanced item
This is a special balanced version with matched triode sections for use in in critical ...In stock£36.00Buy Now - ECC83-HARMA STR CRYOHarma Cryo The Harma ECC83 STR Cryo has the most neutral and warmest sounding with the Classic vintage tone when compared to all ...In stock£26.00
Buy Now - ECC83-HARMA STR CRYO BALANCEDHarma Cryo Special Balanced item
This is a special balanced version with matched triode sections for use in in critical ...In stock£30.00Buy Now - ECC83/ 12AX7M-GROOVE TUBES SUPER PREMIUM CRYO Groove Tubes CryoSpecial Cryo Version
This is a specially cryogenically treated version of the Groove Tubes 12AX7 Mullard ...In stock£36.00
Buy Now - ECC83/ 12AX7M-GROOVE TUBES SUPER PREMIUM CRYO BALANCEDGroove Tubes CryoSpecial Balanced item
This is a specially cryogenically treated version with balanced output from each triode ...In stock£40.00Buy Now - ECC83/ 12AX7WA-HARMA VINTAGE CRYOHarma Cryo The Harma 12AX7WA Vintage Cryo has been designed around the medium length ribbed anode plate design of the Mullard ...In stock£
22.00
£20.00
Buy Now - ECC83/ 12AX7WA-HARMA VINTAGE CRYO BALANCEDHarma Cryo Special Balanced item
This is a specially cryogenically treated version with balanced output from each triode ...In stock£24.00
£22.00Buy Now - ECC83/ 7025-HARMA DR250 CRYOHarma Cryo The Harma 7025 STR DR250 Cryo is a close sounding recreation of the famous USA made 7025 valve. It is the perfect valve ...In stock£28.00
Buy Now - ECC83/ 7025-HARMA DR250 CRYO BALANCEDHarma Cryo Special Balanced item
This is a specially cryogenically treated version with balanced output from each triode ...In stock£30.00Buy Now - ECC83/ 7025WA-TAD RT080-CRYOTube Amp Doctor Cryo The TAD 7025 WA Cryo is a low noise version of the TAD ECC83 WA selected for use in demanding V1 position of high gain ...In stock£30.00
Buy Now - ECC83/ ECC83S-JJ TESLA CRYOJJ Tesla Cryo This specially treated cryogenic version of the JJ ECC83S. The Cryo treatment gives better clarity, improved sonics and ...In stock£22.00
Buy Now - ECC83/ ECC83S-JJ TESLA CRYO HIGH GAIN 3 VALVE PRE AMP KITJJ Tesla Cryo 3 Valve JJ Preamp kit
High Gain Cryo
This 3 valve set of specially selected high gain Cryo treated ...In stock£74.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO HIGH GAIN 4 VALVE PRE AMP KITJJ Tesla Cryo 4 Valve JJ Preamp kit
High Gain Cryo
This 4 valve set of specially selected high gain Cryo treated ...In stock£99.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO HIGH GAIN 5 VALVE PRE AMP KITJJ Tesla Cryo 5 Valve JJ Preamp kit
High Gain Cryo
This 5 valve set of specially selected high gain Cryo treated ...In stock£124.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO HIGH GAIN 6 VALVE PRE AMP KITJJ Tesla Cryo 6 Valve JJ Preamp kit
High Gain Cryo
This 6 valve set of specially selected high gain Cryo treated ...In stock£149.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO HIGH GAIN 7 VALVE PRE AMP KITJJ Tesla Cryo 7 Valve JJ Preamp kit
High Gain Cryo
This 7 valve set of specially selected high gain Cryo treated ...In stock£174.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO STAN GAIN 3 VALVE PRE AMP KITJJ Tesla Cryo 3 Valve JJ Preamp kit
Standard Gain Cryo
This 3 valve set of specially selected standard gain Cryo ...In stock£68.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO STAN GAIN 4 VALVE PRE AMP KITJJ Tesla Cryo 4 Valve JJ Preamp kit
Standard Gain Cryo
This 4 valve set of specially selected standard gain Cryo ...In stock£90.00Buy Now - ECC83/ ECC83S-JJ TESLA CRYO STAN GAIN 5 VALVE PRE AMP KITJJ Tesla Cryo 5 Valve JJ Preamp kit
Standard Gain Cryo
This 5 valve set of specially selected standard gain Cryo ...In stock£112.00Buy Now
