Products > Cryo Valves

DEEP CYROGENTIC TREATMENT The process involves taking the vacuum tubes and freezing them down to -312 f and soaking these for a minimum of 12 hours. Then the temp is held at this low level for 24 hours. The vacuum tubes are then slowly brought up to normal levels over the next 12 hours. Metals respond very well to deep cryogenic process. The reasons are as follows. During the cooling or solidification phase of the manufacturing process, molecules are trapped in a haphazard pattern. This is down to stress caused in the bending and welding of the anode plate material.. This random placement causes obstacles for electrons and when encountered this interference can cause noise, slow down electron flow and sound deteriation affecting the quality of the sound of the vacuum tube. At very cold temperatures (below -312F), the molecules will align in a more uniform, compact structure through the removal of kinetic energy. When the material is returned to ambient temperature, this new uniform, compact pattern is maintained, Thus changing the structure of the nickel permanently. This process makes a permanent change and the benefits do not deteriorate over time or upon return to operating temperature, it changes the whole way the vacuum tube performs. The biggest benefits I have found has been a dramatic improvement in dymanic range. Bass response has been clearer with reduction in microphonics. The really most starling fact as been how the valve operates under saturated and overdriven conditions. This has made some of the more basic Fender amps sound fuller and warmer.

Total : 82 | Page 1 of 4
  • NameManufacturerCommentStockPricePhotoOrder
  • 5687WB-HARMA CRYOHarma Cryo These Harma 5687WB Cryo are U.S.A made original military grade specification double triode in improved WB version made ...In stock£20.00Buy Now
  • 5703WB/ RAYTHEON CRYORaytheon CryoOriginal USA made 5703 WB Raytheon Cryo is an instant upgrade over the standard 5703. THE CRYO TREATMENT further ...In stock£20.00Buy Now
  • 5842WA/ 417 RAYTHEON CRYORaytheonOriginal USA made 5842 WA Raytheon Cryo is an instant upgrade over the standard 5842 and the Western Electric 417. THE ...In stock£30.00Buy Now
  • 5881-HARMA CRYOHarma Cryo The Harma 5881-Cryo is the button based Russian military valve is the same valve which powered the Marshall and Mesa ...In stock£20.00Buy Now
  • 5881/ HARMA-CRYO MESA BOOGIE 400 PLUS SETHarma Cryo Here is a special Cryo set for all you owners of the Mesa Boogie 400 plus bass head who want upgraded performance and ...In stock£240.00Buy Now
  • 5881WXT/ 6L6RB-SOVTEK-CRYOSovtek CryoThe Sovtek 5881 WXT has become the industry standard 6L6 type, Fitted by Fender and used by Groove tubes as the 6L6-RB ...In stock£18.00Buy Now
  • 5U4GB-HARMA RETRO CRYOHarma Cryo The Harma Retro Cryo 5U4GB is a specially Cryogenically treated version offering the ultimate in performance.The Harma ...In stock£20.00Buy Now
  • 6111WA-PHILIPS-CRYOPhilips ECG JAN CRYOThis Full military specification Philips 6111Wa valve is specially cryo treated for use in Neumann M149 tube ...In stock£30.00Buy Now
  • 6550A-HARMA RETRO CRYOHarma Cryo The Harma 6550A Retro Cryo is a meticulous recreation of the classic General Electric 6550A as the Original American ...In stock£36.00Buy Now
  • 6L6GC-HARMA RETRO-CRYOHarma Cryo The Harma 6L6GC Retro is a re issue of the famous Sylvania STR 387 that was produced for Fender in the early 1970s.This ...In stock£22.00Buy Now
  • 6L6GC-HARMA RETRO-CRYO MESA SELECTHarma Cryo The Harma 6L6GC Retro Cryo Mesa Select is a re issue of the famous Sylvania STR 387 that was produced for Fender in the ...In stock£24.00Buy Now
  • 6L6GC-S.T.R-TAD CRYOTube Amp Doctor Cryo The Cryo T.A.D 6L6GC-STR is an excellent valve and in sonic terms out performs the standard untreated item by a long ...In stock£22.00Buy Now
  • 6L6GC-STR/ HARMA-CRYOHarma Cryo The Harma 6L6GC STR-CRYO has a number of features that make this ideal in all audio and guitar amplifier applications. ...In stock£22.00Buy Now
  • 6L6GC/ JJ-TESLA -CRYOJJ Tesla Cryo The JJ-Tesla 6L6GC Cryo is the best sounding version of JJ 6L6GC valve available today. The Cryo treatment enhances the ...In stock£20.00Buy Now
  • 6L6GC/ SVETLANA/ WINGED C CRYOSvetlana Winged C Cryo The design of this valve has its roots in the famous Sylvania STR387. The valve features thick mica spacers and ...In stock£32.00Buy Now
  • 6L6WGB/ 5881-PHILIPS CRYOPhilips ECG JAN CRYOThese are the Cryo treated version of the original small bottle American Military JAN 6L6WGB/5881 that was made for the ...In stock£38.00Buy Now
  • 6L6WGC-STR BLACK PLAT/ TAD CRYOTube Amp Doctor Cryo The TAD 6L6WGC-S.T.R Cryo is one of my favorite valves as the cryo treatment really takes this valves performance to ...In stock£22.00Buy Now
  • 6N1P-EB-HARMA-CRYOHarma Cryo The HARMA 6N1P-EB CRYO is a special long life, low noise version of the 6N1P. The Harma 6N1P-EB CRYO is a very robust ...In stock£14.00Buy Now
  • 6V6GT-GENERAL ELECTRIC-CRYO-1953General Electric Cryo These General Electric 6V6GT date from 1953 and came to us in the original military steel cases.These early G.E 6V6GT ...In stock£48.00Buy Now
  • 6V6GT-STR/ TAD CRYOTube Amp Doctor Cryo The CRYO Version of the TAD 6V6GT-STR is one of the best sounding current production 6V6GT that I have had the pleasure ...In stock£22.00Buy Now
  • 6V6GTS/ JJ-TESLA CRYOJJ Tesla Cryo The JJ-Tesla 6V6GTS Cryo is the best sounding version of JJ 6V6GTS valve available today. The Cryo treatment enhances ...In stock£18.50Buy Now
  • 7199/ PHILIPS-CRYOOriginal USA made 7199 Philips made for the American military with very tight quality control. The 7199 was used in ...In stock£30.00Buy Now
  • E182CC/ 7119-MULLARD HOLLAND CRYO Mullard Cryo The E182CC double triode is an extra special quality version of the E82CC which was itself a special quality version of ...In stock£50.00Buy Now
  • ECC81-STR/ HARMA-CRYOHarma Cryo The HARMA ECC81-CRYO is a specially treated and selected valve for use in critical positons in both audio and guitar ...In stock£16.00Buy Now
  • ECC81-STR/ HARMA-CRYO BALANCEDHarma Cryo The HARMA ECC81- STR CRYO BALANCEDis a specially balanced item for use as a phase splitter or if you need balanced ...In stock£20.00Buy Now
Total : 82 | Page 1 of 4
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