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. Philips Cryo

Click below to read our rave reviews on Cryo treated valves from the following magazines.
May 2006 p123 Article by Nick Guppy Harma Cryogenically Treated Valves	April 2006 p77 Article by Tim Slater Harma Vacuum Tubes
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Name	Manufacturer	Comment	Stock	Price	Photo	Order
6111WA/PHILIPS-CRYO	Philips Cryo	This is a specially cryo treated 6111WA for use in Neumann M149 tube microphones.These benefit from ...	In stock	£40.00
6922/E88CC/PHILIPS-CRYO	Philips Cryo	The performance of the Cryo Philips 6922 is quite amazing. This valve has always suffered from ...	Sold Out	£18.00
6L6WGB/5881 JAN PHILIPS CRYO	Philips Cryo	These are A Cryo Treated version of the original small bottle American Military JAN 6L6WGB/5881 ...	In stock	£35.00
6SL7WGT/ 6N9P/PHILIPS-CRYO	Philips Cryo	This is a rugged AMERICAN military spec valve which is one of the best valves for the AMPEG B-15, ...	In stock	£20.00
7199/PHILIPS-CRYO	Philips Cryo	This is a special cryo treated version for use in high end audio and vintage guitar amps.The 7199 ...	In stock	£30.00
ECC83/5751-PHILIPS-CRYO	Philips Cryo	This is a specially cryo treated Philips 5751.The cryo treatment offer more detail and clarity over ...	In stock	£26.00
EF86/DARIO/PHILIPS CRYO	Philips Cryo	DARIO MINIWATT was a trade name for PHILLIPS. These EF86 were made in HOLLAND and are identical to ...	In stock	£35.00

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