Amp Repairs and Maintenance

Amp in need of service, repair or modification?
John @ BJ Amps can help you…

At The Guitar Centre at the Gabba, we are lucky enough to have access to one of Australia’s most revered amp builders, John Ratajczyk @ BJ Amplifiers, who together with his son designs and manufactures some of the country’s finest boutique valve amplifiers.

We offer a convenient drop-off and pick-up service here in the store (to save you driving all the way out to where our amp tech is located), so all you need to do is leave the amp with us and we’ll arrange everything else!

Services include:

  • Amp health check and general servicing
    (tubes, voltages, bias, pots, etc.)
  • Repairs
  • Modifications and customisations
  • Vintage amp restorations
  • Custom Handmade Amp Transformers
For more information and pricing, simply give John a call at 07 3392 3821 or email:, and when you’re ready, drop it in to us here at the store for collection.