Customer Testimonials
Quad 405 Stage 1 ...
«Hi

I received my upgraded Quad 405 from you and installed it yesterday in place of a Quad 405 -2 which had new smoothing capacitors installed but that was all. Both into some Kef LS50s.   To say I was speechless would be an understatement.  The sound of the unit you have ...»



Alan Sa...

Quad 405 II Stage...
«I hooked the upgraded Quad 405 2 up to my home system for fun yesterday. I had no idea just how radical a part the amp plays in the chain! My problem now is that I want to upgrade everything. The clarity and subtlety of sound is remarkable. I'm stunned. It's made me think again about how we list ...»


Dan Swift

Welcome to Red Hill Audio

Our unique combination of extensive knowledge, experience & the finest quality components and modules brings exceptional improvements in sound quality to your treasured hifi

view upgrades


  • Audiolab Upgrades
  • Arcam Upgrades
  • Quad Upgrades
  • Meridian Power Supplies
  • Power Supplies

Red Hill Audio

Red Hill Audio © 2017