Quad Upgrade Modules

Quad Upgrade Modules

We have recently started taking a more modular approach to our upgrade services.

Featuring bespoke circuits, carefully laid out on high-quality printed circuit boards & of course, using the finest quality components for the best sound.

These modules are now available for you to fit inside your own equipment.

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  • Quad 405 Dual Mono PSU
    Quad 405 Dual Mono PSU Our Quad 405 Dual Mono PSU makes a big improvement to this fantastic amplifier. Bass grip, definition and control is improved along with clearer and better defines mids and treble. This version of the PSU is designed to be a direct replacement for the simple, two-capacit..
    £125.00
  • Quad 405 Transformer Replacement
    Quad 405 Transformer Replacement Replace a buzzing/humming mains transformer with a high quality toroidal type. Comes with custom aluminium mounting bracket. High Current 300va Toroidal Transformer Custom Mounting Bracket Includes Fitting and Testing ..
    £150.00
  • Quad 303 PSU - Stage 1 Version
    Quad 303 PSU Stage 1 Version The vintage Quad 303 is a very capable amplifier. However due to advances in capacitor design, modern electrolytic capacitors are now much smaller and it is very difficult to find replacements which fit the original mounting brackets. To combat this we have develop..
    £95.00
  • Quad 33 Disc Module - Stage 1 Version
    Quad 33 Disc Module - Stage 1 Version Give your vintage Quad 33 phono stage an instant upgrade by fitting our Quad 33 Disc Module. Assembled using low-noise opamps, chosen for the best sound quality and good noise rejection, these modules improve bass, detail and give a more dynamic ..
    £89.00
  • Quad 33 Output Modules - Stage 1 Version
    Quad 33 Output Modules - Stage 1 Version Give your vintage Quad 33 an instant upgrade by fitting our Quad 33 Output Modules. Assembled using state of the art, modern surface mount opamps for the best sound quality and exceptional noise rejection, these modules improve bass, detail an..
    £99.00
  • Quad 33 Output Modules - Stage 2 Version
    Quad 33 Output Modules - Stage 2 Version For the ultimate upgrade, our Quad 33 Output Modules use better sounding components and are tuned for a more musical presentation. For even better sound quality, the Stage 2 Modules use the finest sounding opamps for the ultimate sound quality ..
    £135.00