Get the lowest-powered (cheapest) AVR you can find. It'll sound better than the higher powered ones. No kidding. The more output devices the amp has, the harder it is to make them sing together. If you get something <50 wpc (or preferably <30 wpc), you normally get a SINGLE PAIR of output transistors. These sound cleaner than multi-transistor outputs.
If you can get by with stereo only, try a Qinpu A-6000 (16 wpc hybrid tube/ss). It'll make those K-Horns sit up & sing!
If you can get by with stereo only, try a Qinpu A-6000 (16 wpc hybrid tube/ss). It'll make those K-Horns sit up & sing!