This sale is for a 12AX7/ECC83S JJ Tesla Cryogenically treated pre amp Tube.

If you need to buy more than one tube please click on the truck which will take you to the multipurchase ebay listing.

CLICK ON TRUCK TO GO TO MULTI PURCHASE EBAY PAGE

ABOUT THESE CRYO TUBES

Cryogenically treated JJ 12AX7 valves. The valves have been subjected to subzero temperatures for several days and then slowly elevated to room temp by a microprocessor controlled system. The treatment has been carried out by the worlds leading Cryogenic specialist lab. Tubes subjected to Cryo treatment undergo a molecular structural change within all the inner metal components which is known to relieve internal stresses and produce a more tactile, smooth and more rugged material. We have had rave reviews from customers that have purchased the Cryo version of these tubes.

These are the latest generation of 12AX7 valve to come from the JJ Tesla plant in the Slovak Republic.  The new design is based on the famous frame grid construction made famous by Telefunken.  The main improvements made are in the area of microphonics and noise.  This is yet another manufacturer that is producing well engineered and a solid construction that adds to their already proven track record. 

The JJ tube is a great all round valve and a very popular tube in the guitarist circle.  The design improvements that JJ have made along side the CRYO treatment that these valves have undergone will no doubt make this one of the best sounding modern tubes available today.

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WHAT ABOUT THE TONE?

The valve tends to bring out the natural tone of the instrument and has a clean detailed edge which we found rounder and warmer than other standard types of 12AX7.  Background hiss and hum was also very low at high gain settings.  Also we found that compared to the standard 12AX7 the mids were very smooth and possessed more clarity.  The Cryo treatment seems to have tightened up the bottom end response and added more overall depth to the tone of these great valves.

Drive the tube a bit and you get that classic crunch sound which sounded round and retro.  Great Stuff.  This valve is suited for those that love vintage valve tone and work well in most leading brand amps. 

Drive them a bit more and you get a smooth round overdrive.  Perfect for taming down those over bright harsh amplifiers.  When I hear valves like this it makes me realise how far the digital generation of designers really have to go to get anywhere near this kind of tone.

Audio tests were carried out in a leading brand high end 100w twin channel combo.

BUY WITH CONFIDENCE

We take a lot of extra time testing all our valves even though they come to us pre-tested.  We do this in the hope of promoting our business reputation and providing you with a first class product.  So bid with confidence and give your amp an upgrade with these Fantastic tubes.

YOU CAN BUY IT NOW ON THIS AWESOME VALVE. 

PACKAGE MATERIALS AND POSTAGE COST 

BUY MORE THAN ONE AND SAVE ON POSTAGE.

UK package and postage costs are £1.99 buy a second and get PP Discount. Just add  40p PP cost (Total £2.39 if you buy 2)

Europe  £2.50 

Rest of the world  £3.24