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PROTON AA-1150 dual transformer vintage hifi stereo power amplifier with AM-455 integrated amp/ preamp, Audio, Soundbars, Speakers & Amplifiers on Carousell
![The Robb Collections: PROTON Audio, NAD and Dynaco are Cousins. Inventor of Dynamic Power on Demand Amplifiers. The Robb Collections: PROTON Audio, NAD and Dynaco are Cousins. Inventor of Dynamic Power on Demand Amplifiers.](https://1.bp.blogspot.com/-3SDbbeljmEg/W0Zf073_9iI/AAAAAAAALQA/k1J2J6RY-mc3DAVHIH3ZHeZkTr7pBIt5QCLcBGAs/s1600/PRTN%2BCAT%2B04.jpg)