Products > Amp Audio Upgrade Kits Cryo > Quad 11 Original Power Amplifier 1953 to 1970
Our Cryo audio upgrade kits offer a selection of the best quality modern production items along with high quality new old stock valves to give you an improved sound and a cost effective upgrade.
We have over 30 years' experience with using and listening to high end audio amplifiers and over 25 years in improving the sound by selecting the correct valves
These Cryo kits have been put together after many hours of listening tests to confirm the valves performance in any given application. The Cryo Upgrade offer the ultimate Audio upgrades