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Products > Cryo Valves
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 soundsâ€.
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- 5881-HARMA MESA BOOGIE 400+ CRYO OUTPUT SETHarma Cryo Special Offer 20% Discount
Here is a special Cryo set for all you owners of the Mesa Boogie 400 plus bass head ...In stock£432.00
£345.60
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FREE UK
Mainland Delivery - KT88-SVETLANA WINGED C CRYOSvetlana Winged C Cryo Matched Quads Only
These are the ORIGINAL Svetlana KT88 as made by JSC Svetlana and are also known by the name ...In stock£200.00
Buy 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£174.00
Buy Now - ECC83/ ECC83S-JJ TESLA CRYO STAN GAIN 7 VALVE PRE AMP KITJJ Tesla Cryo 7 Valve JJ Preamp kit
Standard Gain Cryo
This 7 valve set of specially selected standard gain Cryo ...In stock£156.00Buy 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 STAN GAIN 6 VALVE PRE AMP KITJJ Tesla Cryo 6 Valve JJ Preamp kit
Standard Gain Cryo
This 6 valve set of specially selected standard gain Cryo ...In stock£134.00Buy 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 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 - 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 - 7199-PHILIPS CRYOPhilips ECG JAN CRYOVery Limited Stock
These are the real deal 7199 Philips made in the USA for the American military and have been ...In stock£95.00
Buy Now - 8254/ EC1000-MULLARD CRYOMullard Cryo Special Cryo Treated Version
Very special Cryo treated Mullard 8254 EC1000 for Neumann microphones. We have Cryo ...In stock£95.00
Buy 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 - 6922/ E88CC-HARMA CRYO MATCHED PAIRHarma Cryo Special Matched Pairs
This is a special balanced version with matched triode sections available in matched ...In stock£85.00
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 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 - 6L6GC-SVETLANA WINGED C MESA SELECT AKA MESA 6L6GC STR 454 CRYOSvetlana Winged C Cryo Special Cryo Treated Version
The Mesa 6L6GC STR 454 is the Original Svetlana winged C 6L6GC which Mesa sourced ...In stock£75.00
£67.50
Buy Now - 6L6GC-SVETLANA WINGED C CRYOSvetlana Winged C Cryo The Original Svetlana Winged C 6L6GC that was designed based on the famous Sylvania STR 387 6L6GC and manufactured in ...In stock£
70.00
£63.00
Buy Now - 6V6GT-PHILIPS CRYOPhilips ECG JAN CRYOBlack Plate Cryo Version
Special Cryo treated version of the original American Military JAN 6V6GT which are ...In stock£55.00
Buy Now - 6V6GT-PHILIPS CRYO SINGLEPhilips ECG JAN CRYOBlack Plate Cryo Version
Single Valve
Special Cryo treated version of the original American Military JAN ...In stock£55.00Buy Now - EF86-PHILIPS DARIO CRYOPhilips CryoEF86 Cryo Dario Miniwatt The Dario Miniwatt was a brand name for mighty Philips electronics group. Phillips were the ...In stock£50.00
Buy Now - KT66/ CV1075-REC RELIC CRYORelic Electric Company CryoThe KT66 Relic Cryo is a premium high quality audio grade KT66 that is based on the famous GEC design. This valve has a ...In stock£50.00
Buy Now - GZ34/ 5AR4-HARMA RETRO CRYOHarma Cryo This is a special cryogenically treated version that offers the highest performance.The Harma GZ34 Retro Cryo design is ...In stock£48.00
Buy Now - 6L6GC R-GROOVE TUBES SUPER PREMIUM CRYOGroove Tubes CryoFantastic Fender upgrade for HR Deluxe and Deville and also the Blues Deluxe & Deville series.
last pairThe GT ...In stock£42.00
Buy Now - EF86-TESLA CRYOTesla CryoOriginal Tesla EF86 that has been specially selected for low noise and cryo treated for use in high end applications ...In stock£42.00
Buy Now - EL84/ E84L-HARMA CRYO BURST TESTEDHarma Cryo The Harma E84L Burst Tested on the tester designed for Brian May
This valve is the specially treated cryogenic ...In stock£40.00
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