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Products > Amp Audio Upgrade Kits

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.

• NameBrandCommentStockPrice PhotoOrder
• Primaluna Prologue 3 Original Preamplifier Harma STR Full Upgrade KitPrimaluna AmplifiersThis upgrade kit is designed to give you a noticeable upgrade over the stock valves.The kit will give you improvements ...In stock£150.00Buy Now
• Primaluna Prologue 4 Original Poweramp Harma STR EL34 Relic Full Upgrade KitPrimaluna AmplifiersEL34 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade with outstanding value for ...In stock£176.00
  £158.40Buy Now
• Primaluna Prologue 4 Original Poweramp Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£220.00
  £198.00Buy Now
• Primaluna Prologue 5 Original Poweramp Harma STR EL34 Relic Full Upgrade KitPrimaluna AmplifiersEL34 Option
  
  This upgrade kit is designed to give you a noticeable upgrade with outstanding value for money. The ...In stock£176.00
  £158.40Buy Now
• Primaluna Prologue 5 Original Poweramp Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£220.00
  £198.00Buy Now
• Primaluna Prologue 5 Original Poweramp KT88 JJ Full Upgrade KitPrimaluna AmplifiersKT88 Option with JJ
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable ...In stock£272.00
  £244.80Buy Now
• Primaluna Prologue 5 Original Poweramp Harma STR KT88 Gold Lion Full Upgrade KitPrimaluna AmplifiersKT88 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade from the stock valves.The kit ...In stock£340.00Buy Now
• Primaluna Prologue 6 Original Dual Mono Poweramp Harma STR EL34 Relic Full Upgrade KitPrimaluna AmplifiersEL34 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade with outstanding value for ...In stock£352.00
  £316.80Buy Now
• Primaluna Prologue 6 Original Dual Mono Poweramp Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£360.00
  £324.00Buy Now
• Primaluna Prologue 7 Original Dual Mono Poweramp Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£360.00
  £324.00Buy Now
• Primaluna Prologue 7 Original Dual Mono Poweramp KT88 JJ Full Upgrade KitPrimaluna AmplifiersKT88 Option with JJ
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable ...In stock£544.00
  £489.60Buy Now
• Primaluna Prologue 7 Original Dual Mono Poweramp Harma STR KT88 Gold Lion Full Upgrade KitPrimaluna AmplifiersKT88 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade from the stock valves.The kit ...In stock£680.00Buy Now
• Primaluna Prologue 8 Original CD player Harma STR Full Upgrade KitPrimaluna AmplifiersThis upgrade kit is designed to give you a noticeable upgrade over the stock valves.The kit will give you improvements ...In stock£150.00Buy Now
• Primaluna Prologue Classic Integrated Harma STR EL34 Relic Full Upgrade KitPrimaluna AmplifiersEL34 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade with outstanding value for ...In stock£176.00
  £158.40Buy Now
• Primaluna Prologue Classic Integrated Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£220.00
  £198.00Buy Now
• Quad 11 Original REC Relic KT66 Tesla EF86 Upgrade Kit PairQuad Amplifiers Special Offer 15% Discount
  
  The KT66 Relic is a premium high quality audio grade KT66 that is based on the famous ...In stock£316.00
  £268.60Buy Now
• Quad 11 Original Gold Lion KT66 Tesla EF86 Upgrade Kit PairQuad Amplifiers Special Offer 10% Discount
  
  The KT66 Gold Lion has gained a worldwide reputation for sound quality with Quad ...In stock£416.00
  £374.40Buy Now
• Primaluna Prologue Classic Integrated KT88 JJ Full Upgrade KitPsvane AudioKT88 Option with JJ
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable ...In stock£272.00
  £244.80Buy Now
• Primaluna Prologue Classic Integrated Harma STR KT88 Gold Lion Full Upgrade KitPrimaluna AmplifiersKT88 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade from the stock valves.The kit ...In stock£340.00Buy Now
• Primaluna Prologue Classic CD player Harma STR Full Upgrade KitPrimaluna AmplifiersThis upgrade kit is designed to give you a noticeable upgrade over the stock valves.The kit will give you improvements ...In stock£150.00Buy Now
• World Audio Design 300B PSE Monoblock JJ Full Upgrade KitWorld Audio Design AmpllfiersOur JJ revalve kits consist of a specially selected set of JJ that will provide an outstanding upgrade to this amp. JJ ...In stock£602.00Buy Now
  
  FREE UK
  Mainland Delivery
• Primaluna Prologue Premium Integrated Harma STR EL34 Relic Full Upgrade KitPrimaluna AmplifiersEL34 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade with outstanding value for ...In stock£176.00
  £158.40Buy Now
• Primaluna Prologue Premium Integrated Harma STR KT66 Relic Full Upgrade KitPrimaluna AmplifiersKT66 Option
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable upgrade by ...In stock£220.00
  £198.00Buy Now
• Primaluna Prologue Premium Integrated KT88 JJ Full Upgrade KitPrimaluna AmplifiersKT88 Option with JJ
  
  Special Offer 10% Discount
  
  This upgrade kit is designed to give you a noticeable ...In stock£272.00
  £244.80Buy Now
• Primaluna Prologue Premium Integrated Harma STR KT88 Gold Lion Full Upgrade KitPrimaluna AmplifiersKT88 Stock Option
  
  This upgrade kit is designed to give you a noticeable upgrade from the stock valves.The kit ...In stock£340.00Buy Now

Specials

• 
  EL34/EL34B STR-TAD SPECIAL OFFER
  Special Offer 15% Discount
  
  The TAD EL34B STR has been around for many years now and this valve has a number of ...
  £22.00  £18.70
• 
  EL84-SOVTEK
  Special Offer 20% Discount Limited Stock
  
  The Sovtek EL84 has been the industry standard go to EL84 for over 25 ...
  £24.00  £19.20
• 
  GZ34/5AR4-SOVTEK
  Special Offer 15% Discount
  
  The Sovtek GZ34 5AR4 a very well made modern full wave rectifier. The valve uses ...
  £32.00  £27.20
• 
  211-PSVANE CLASSIC SERIES
  Special Offer 15% Discount<>br>
  Psvane 211 Classic Series is a directly heated audio power triode for High end Audio ...
  £115.00  £97.75
• EF86-HARMA RETRO£26.00  £23.40
• Bugera 6262 Infinium£254.00  £228.60
• Way Huge WM22 Smalls£132.50  £119.25