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 -312°F), 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.

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  • 5703WB/ RAYTHEON CRYORaytheon CryoOriginal USA made 5703 WB Raytheon Cryo is an instant upgrade over the standard 5703. The Cryo Treatment further ...In stock£25.00Buy 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£22.00Buy Now
  • 5881-HARMA MESA SELECT CRYOHarma Cryo Mesa Select for use in Mesa Boogies

    The Harma 5881-Cryo is the button based Russian military valve is the same ...
    In stock£24.00Buy 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
  • 5Y3WGTA-PHILIPS CRYOPhilips ECG JAN CRYOThese are the Original American made Jan specification Cryo Philips 5Y3WGTA with the rare black plate box anode ...In stock£30.00Buy Now
  • 6111WA-PHILIPS CRYOPhilips ECG JAN CRYOOriginal USA made Philips Jan specification 6111WA Military grade super miniature valve that is the highest quality ...In stock£25.00Buy 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£38.00Buy Now
  • 6550C-SVETLANA WINGED C CRYOSvetlana Winged C Cryo Original Svetlana 6550C winged C which is regarded as one of the best 6550 available today. These are the ORIGINAL ...Sold Out£100.00Buy Now
  • 6922/ E88CC-HARMA CRYOHarma Cryo The Harma 6922 Cryo treated is a special quality valve that is the best sounding military Russian 6922 type that was ...In stock£50.00Buy Now
  • 6AU6WC-GENERAL ELECTRIC CRYOGeneral Electric Cryo The 6AU6WC General Electric in Cryo treated format has been introduced for customers who have requested this item for ...In stock£16.00Buy Now
  • 6C45PI/ SOVTEK-CRYOSovtek CryoThe Super Russian 6C45PI is an audio super valve that has excellent sound characteristics. This Sovtek item is the ...In stock£28.00Buy Now
  • 6CG7/ 6FQ7-GENERAL ELECTRIC CRYOGeneral Electric Cryo The GE 6CG7/6FQ7 has the classic G.E sound stage which is big and open. These are original USA made valves are ...In stock£20.00Buy Now
  • 6GK5/ 6FQ5-HARMA-CRYOHarma Cryo These specially treated cryo 6GK5 offer the Conrad Johnson owners the ultimate performance. They provide a more ...In stock£18.00
    Buy 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 Mesa Select for use in Mesa Boogies

    The Harma 6L6GC Retro Cryo Mesa Select is a re issue of the famous Sylvania ...
    In stock£24.00Buy Now
  • 6L6GC-HARMA STR-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-SVETLANA WINGED C CRYOSvetlana Winged C Cryo The Svetlana 6L6GC was designed based on the famous Sylvania STR 387 6L6GC and manufactured in the JSC Svetlana factory ...In stock£40.00Buy Now
  • 6L6GC-SVETLANA WINGED C MESA SELECT CRYOSvetlana Winged C Cryo Mesa Select for use in Mesa Boogies

    This valve is specially selected to run in Mesa Boogies fixed bias ...
    In stock£42.00Buy 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
  • 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 PLATE TAD CRYOTube Amp Doctor Cryo The TAD 6L6WGC-STR Cryo is one of my favourite valves as the cryo treatment really takes this valves performance to ...In stock£26.00Buy Now
  • 6N1P-SVETLANA-CRYOSvetlana Winged C Cryo Only 4 left

    This is a special Cryo version for high end audio.The Svetlana 6N1P is the long life EB version ...
    In stock£16.00Buy Now
  • 6N1P-VI-HARMA CRYOHarma Cryo The Harma 6N1P-VI Cryo is a special long life, low noise version of the 6N1P. They are all selected to very tight ...In stock£15.00Buy Now
  • 6V6GT STR-TAD CRYOTube Amp Doctor Cryo This is a special Cryo treated version of the TAD 6V6GT-STR. TAD have based the design on the oval plate RCA and GE ...In stock£26.00Buy 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
Total : 83 | Page 1 of 4
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