Marshall Amp Cryo Full Revalve Kits / Marshall Handwired Series 2061X 20 watt Classic EL84 Retro Cryo full upgrade kit

Marshall Handwired Series 2061X 20 watt Classic EL84 Retro Cryo full upgrade kit Click on image(s) above to view larger

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Marshall amplifiers are voice of Rock and Roll past, present and in future.These amplifiers have been used by all the music legends. From Clapton's fierce bluesbreaker solos with John Mayall, to the powerhouse slam of Jimmy Page in Led Zeppelin to Steve Jones awesome sound with his JCM800. These Kits are designed and put together to enable you to get the best out of your particular amplifier.
The Marshall Handwired Series 2061 X 20 watt Classic Retro Cryo full revalve kit is specially selected for Marshall Handwired 2061 X 20 watt head.

The Classic Marshall kits are designed to give your Marshall as close to the old Mullard tone as possible with this quite exceptional sounding amplifier. This is done by using modern day production valves that are traditionally voiced and then getting the sonic improvement that Cryogenic treatment brings to the valve. The Cryo treated valves have a smoother distortion with more detail and clarity. The valve has more bite and better focus and they produce a sound that is only attainable by using very expensive new old stock valves.

In the Pre amp section we use the following,

The ECC83 Retro Cryo retains the classic Marshall crunch and provides a harmonically rich and detailed sound with excellent 3 dimension midrange response. This valve has a traditional British voiced sound and the Cryo treatment improves this valves sonic signature and gives exceptional depth in the midrange. The cryo treatment enhances the smooth linear midrange response and gives extended frequency response so you get smooth warm and punchy midrange with excellent clarity and tight fat punchy lows. The Cryo treatment also improves the valves overdriven characteristics providing a warm sustaining sound with plenty of upper harmonics. This captures that classic vintage Marshall sound better than all the other ECC83/12AX7 that I have tried.

In the output stage

The Harma EL84 Retro is based on Mullard EL84 which in most people books is the best EL84 ever made. So to replicate this iconic valve close attention has been paid in the manufacturing process to the original Mullard specifications. The valve has gold plate grids with special attention given to the windings to reduce the likelihood of the valve failure. The valve uses carbonized screen grids and the anode plate are specially coated which not only share the look of the original Mullard but is designed to help heat transfer and eliminate red plating. The glass envelope is made of thick 22mm glass to prevent microphonics when used in guitar combos.
The Harma EL84 Retro sound is what sets this apart from the rest as it produces a deep well defined tight bass and the classic slam of the Mullard in the bottom end. The midrange performance has been tweaked to provide warm clear detail at low volumes with clear articulation and smooth even distortion when the amplifier is cranked. Special attention has been given to the top end of this valve giving touch sensitive bite without any hardness.
The Cryo treatment really does transform this valve sound into a different class
The valve now has a richer clear treble response which has more clarity and bite at the top end. The cryo treatment enhances the valves mid forwardness give a full sustaining tone when overdriven .The bass end is very tight and well focused and crunches with more weight than the standard EL84.

The set consists of 4 valves

1 Specially Gain selected Harma ECC83 Retro Cryo in V1
1 Specially Gain selected and balanced Harma ECC83 Retro Cryo in V2
2 Selected and matched Harma EL84 Retro Cryo in a matched Pair.

Please note that this is the valves only


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