QuirkAudio offers upgrade services to a number of amplifiers and components. These include:

NAD, Onkyo, Superphon, APT, Revox, Mitsubishi, McIntosh, Marantz, Pioneer, Kenwood and many others.

These are done at a fixed price including all the top quality selected components.

Examples of the types of upgrades are detailed below.

Currently we offer an upgrade service to NAD 2200 amplifiers which includes:

  • all new electrolytic capacitors(inc. power supply capacitors)- Nichicon & Elna Audio quality and low impedance as applicable
  • New input IC’s- Low noise audio specific
  • Additional capacitance at critical places in the circuit for enhanced dynamics- based on the NAD 2600/2700
  • Replacement of critical ceramic capacitors
  • New relays
  • Full testing, aligning and servicing

We also upgrade Onkyo A7 and Onkyo A10 amplifiers which includes:

  • All new electrolytic capacitors- Nichicon audio and low impedance types asĀ  applicable
  • Upgrading of main power supply capacitors to 27,000ufv 100v units
  • Replacement of transistors in line pre amp section with modern low noise types
  • New Power supply diodes with modern fast types
  • Replacement of low value electrolytic capacitors with WIMA film capacitors
  • Replacement of certain ceramic capacitors with film types where applicable
  • Full testing, aligning and servicing

Overviews and pictures may be found in the blog section of this site

Please contact us for costs and shipping estimates

We also undertake upgrading, repairs and servicing of other units, please contact us at peter@quirkaudio.com.