For transformer repairs, rewinds or manufacture please click on this link
John Chambers has carried out a comprehensive repair, modification, and restoration service for all makes of valve amplification, including both musical instrument amplifiers and Hi-Fi audio equipment for over 30 years. During that time he has acquired a specialised experience of vintage British guitar amps, plus a special passion for the old Italian Geloso Audio Units.
John Chambers is the man behind Champ Electronics. He has been designing, building, and repairing amplification equipment since 1964. The purpose of this site is to demonstrate the experience and expertise that John has acquired since those early days as a schoolboy when he built his first guitar amplifier, right up to the present period of Champ Electronics when, as his main interest even in retirement, John is still carrying out repairs and restorations work to the great benefit of the vintage amplifier enthusiast.
NOTE: If you find that your make and/or model of amplifier is not shown on this website, that does not mean that it has not crossed the Champ Electronics workbench! Please Make Contact with John with any enquiries.(The contact details for John's international counterpart in Australia, "Doctor Valve", together with Industrial Rewinds Ltd (who perform transformer and motor rewinds, as well as manufacturing) are lower down on this Home Page.)
RECENT ADDITIONS TO THE WEBSITE
Work Carried out on Several Bird Amplifiers (7 May 2012)
The Champ CBA-200/200 Stereo (8 x KT88) Amplifier (10 Sept 2011)
Repair of Ashdown Fallen Angel FA40 Combo (24 August 2011)
The Story of a 1961 Vox AC30 Amplifier (11 Aug 2011)
Beck Four Channel PA 60 (14 July 2011)
West Fillmore Bass 200 (8 July 2011)
Update to the Ampeg SVT Pages: Mk1 SVT with 6146 Output Tubes. (4th July 2011)
The 'Doctor Valve' Bias Boy (23 August 2010)
MAIN SITE INDEX
(Please note though that IRL's work and services are undertaken independently from Champ Electronics in all respects.)
This website has been constructed and was maintained for John by Steve Russell of the Vintage Hofner Website until August 2010.