Products > Amp Audio Upgrade Kits > Quad 11 Original Power Amplifier 1953 to 1970

Our 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 valves. These kits have been put together after many hours of listening tests to confirm the valves performance in any given application.

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  • Quad 11 Original REC Relic KT66 Siemens EF86 Upgrade Kit Pair LTD EditionQuad Amplifiers Special Offer 10% Discount

    The KT66 Relic is a premium high quality audio grade KT66 that is based on the famous ...    In stock£270.00
    £243.00    Buy Now
  • Quad 11 Original REC Relic KT66 Mullard EF86 Upgrade Kit Pair LTD EditionQuad Amplifiers The KT66 Relic is a premium high quality audio grade KT66 that is based on the famous GEC design. Now owners of the ...In stock£400.00Buy Now
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by all EU countries.


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