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The Audio Circuit

home audio electronics is of great value and it is greatly appreciated if you are willing to share your wisdom with us. You can add information and pictures online by using the links provided on the brand and model pages. Are you a manuafacturer and/or designer and your brand is not listed here yet? Please do let us know and we will be happy to add you to the database. All visitors are invited to tell us about long forgotten brands not listed yet. - electronics Component manufacturer

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Current Dumping Audio Amplifier (PDF Article) - Quad Current-dumping-audio-amplifier-A-EN2-920-QUA : Current dumping audio amplifier (PDF article) (PDF)
Amplifiers And Superlatives (PDF Article) - Quad Amplifiers-and-superlatives-A-EN1-920-QUA : Amplifiers and superlatives (PDF article) (PDF)
Wide Range Electrostatic Loudspeakers By P.D. Walker - Version 1. (PDF Article) - Quad Wide-range-electrostatic-loudspeakers-A-EN1-941-QUA : Wide Range Electrostatic Loudspeakers by P.D. Walker - version 1. (PDF article) (PDF)
Wide Range Electrostatic Loudspeakers By P.D. Walker - Version 2. (PDF Article) - Quad Wide-range-electrostatic-loudspeakers-A-EN2-941-QUA : Wide Range Electrostatic Loudspeakers by P.D. Walker - version 2. (PDF article) (PDF)
A Visual Overview Of The First Fifty Years Of Quad (PDF Article) First-fifty-years -A-EN1-905-QUA : A visual overview of the first fifty years of Quad (PDF article) (PDF)
The Technology Of Full-range-element Electrostatic Loudspeakers - Acoustat GEN-John Strickland -A-EN2-941-ACO : The technology of full-range-element electrostatic loudspeakers (PDF)
MK-121-2 MED -M-EN2-941-ACO - MK-121-2(A) Medallion "C" Modification - Acoustat MK-121-2 MED -M-EN2-941-ACO : MK-121-2(A) Medallion "C" Modification (PDF)
Joerg Baar, ESL-57 Restauration (PDF Article) - World's First Full Range Electrostatic Loudspeaker ESL-57-restoration-joerg-baar-A-EN1-941-QUA : Joerg Baar, ESL-57 Restauration (PDF article) (PDF)
Double Quad, A Step Closer To The Ultimate Sound (PDF Article) - World's First Full Range Electrostatic Loudspeaker Double-Quad-Farrimond-A-EN1-941-QUA : Double Quad, A step closer to the ultimate sound (PDF article) (PDF)
1970 -B-EN1-906-DUA - Early Seventies. - Dual 1970 -B-EN1-906-DUA : early seventies. (PDF)

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