Vintage Rosewood Infinity Kappa 8 Stereo S... For Sale | Audiogon
Infinity KAPPAFOURAM 100W 4 Channel Car Amplifier for sale online | eBay
Infinity Car Audio Amplifiers in Motors for sale | eBay
Archimago's Musings: MEASUREMENTS: Melody Onix SP3 Mk. II (~2006) Class AB Tube Integrated Amplifier. (And it isn't "diminishing returns" on sound quality, often there are simply "no returns".)
Amazon.com: Infinity Kappa Four - Four Channel Class D Car Audio Amplifier : Electronics
Infinity Kappa One, Four and Five Car Amplifiers - ecoustics.com